Entries |
Document | Title | Date |
20080205657 | Method and an Apparatus for Decoding an Audio Signal - A method for processing an audio signal, comprising: receiving a downmix signal, a first multi-channel information, and an object information; processing the downmix signal using the object information and a mix information; and, transmitting one of the first multi-channel information and a second multi-channel information according to the mix information, wherein the second channel information is generated using the object information and the mix information is disclosed. | 08-28-2008 |
20080212785 | Appliance for Converting Digital Audio Broadcast (Dab) Signals - The invention relates to an appliance ( | 09-04-2008 |
20080253575 | METHOD FOR ASSIGNING A PLURALITY OF AUDIO CHANNELS TO A PLURALITY OF SPEAKERS, CORRESPONDING COMPUTER PROGRAM PRODUCT, STORAGE MEANS AND MANAGER NODE - Method for assigning a plurality of audio channels to a plurality of speakers, corresponding computer program product, storage means and manager node A method for assigning a plurality of audio channels of an audio data content to a plurality of speakers, each of the speakers being associated with a distinct node, called a speaker node, of a wireless network for the distribution of audio data contents, in the context of the diffusion of audio data content by a node, called a diffusion node, of the distribution network, the method being implemented by a node, called a manager node, of the distribution network. The assigning method comprises the following steps for each speaker node, called a first speaker node:
| 10-16-2008 |
20090010441 | Forwarding an audio signal in an immersive audio conference system - A conference bridge of a conference system having a plurality of conference stations, the bridge comprising: reception means for receiving dual-channel audio signals coming from the conference station; determination means for determining at least one processing function per conference station of the conference system; application means for applying respective weighing functions to the received dual-channel signals; build-up means for building up one hybrid dual-channel signal for forwarding per conference station by means for summing a portion of the process dual-channel audio signals; and forwarding means for forwarding the respective hybrid dual-channel audio signal to each of the various conference stations of the conference system. A method of forwarding a spatialized audio scene and implemented by a conference bridge is also disclosed. | 01-08-2009 |
20090060206 | Audio signal transmitting apparatus, audio signal receiving apparatus, audio signal transmission system, audio signal transmission method, and program - There is provided an audio signal transmitting apparatus including: a channel mapping unit which determines the audio signals allocated to each of the channels and generates channel mapping information representing types of the audio signals allocated to each of the channels; an audio signal transmitting unit which transmits the audio signals allocated to each of the channels by the channel mapping unit to the external connection apparatuses by a first transmitting scheme or a second transmitting scheme; and a connection management information providing unit which provides connection management information including the channel mapping information and transmitting scheme information representing the transmitting scheme of the audio signals to the external connection apparatuses. | 03-05-2009 |
20090110201 | METHOD, MEDIUM, AND SYSTEM ENCODING/DECODING MULTI-CHANNEL SIGNAL - A multi-channel signal decoding method is provided. A down-mixed signal representative of a multi-channel signal is decoded, and parameters representing characteristic relations between channels of the multi-channel signal are decoded. An additional parameter is estimated by using the decoded parameters, and the decoded down-mixed signal is up-mixed by using the decoded parameters and the estimated parameter so as to decode the multi-channel signal. | 04-30-2009 |
20090122993 | INFORMATION CAPTURING METHOD - A method for capturing information related to an audio signal includes broadcasting an acoustic signal capable of human perception, broadcasting an RF signal containing information related to content of the acoustic signal, receiving the acoustic signal, receiving the RF signal with a portable device, and using the portable device, storing the information related to the content of the acoustic signal. A similar method is used to capture information related to a visual display. | 05-14-2009 |
20090136044 | METHODS AND APPARATUS FOR PROVIDING A DISTINCT PERCEPTUAL LOCATION FOR AN AUDIO SOURCE WITHIN AN AUDIO MIXTURE - In accordance with a method for providing a distinct perceptual location for an audio source within an audio mixture, a foreground signal may be processed to provide a foreground perceptual angle for the foreground signal. The foreground signal may also be processed to provide a desired attenuation level for the foreground signal. A background signal may be processed to provide a background perceptual angle for the background signal. The background signal may also be processed to provide a desired attenuation level for the background signal. The foreground signal and the background signal may be combined into an output audio source. | 05-28-2009 |
20090147961 | OBJECT-BASED 3-DIMENSIONAL AUDIO SERVICE SYSTEM USING PRESET AUDIO SCENES - Provided are an object-based three dimensional (3-D) audio service system using preset audio scenes and a method thereof. The system and the method are suggested for enabling a user to easily and conveniently watch and listen an object based 3-D audio service by eliminating inconvenience that requires a user to control each of object audio signals of sound sources. The system includes: audio input means for inputting an audio signal; preset audio scene generating means for extracting object audio signals from the audio signal inputted through the audio input means and generating more than one of 3-D audio scene information by arranging the extracted object audio signals in a 3-D space and editing features of each object; and encoding means for encoding and multiplexing the audio signal and the 3-D audio scene information for each object audio signal. | 06-11-2009 |
20090180623 | Communication Devices - The disclosure relates to communication devices which monitor an audio environment at a remote location and convey to a user a representation of that audio environment. The “representation” may be an abstraction of the audio environment at the remote location or may be a measure of decibels or some other quality or parameter of the audio environment. In some embodiments, the communication devices are two-way devices which allow users at remote locations to share an audio environment. In some embodiments, the communication devices are one way devices. In some embodiments, the communication devices may have the form of a window and be arranged to present sound in a manner that mimics sound received through a window. In such embodiments, the more open the window is, the more sound is relayed by the communication device. | 07-16-2009 |
20090220094 | PROCESSING CIRCUIT CAPABLE OF MODIFYING DIGITAL AUDIO SIGNALS - The present invention provides an audio processing circuit for receiving a first stream complying with a first standard (for example. MPEG audio standard) and generating a second stream complying with a second standard which is a digital interface standard (for example, S/PDIF standard). The audio processing circuit includes: a stream buffer for storing a plurality of frames of the first stream; a stream recovering circuit for detecting at least one of a plurality of fields in the frames, modifying at least one of the plurality of fields according to the first standard, and generating modified frames; a first buffer for storing the modified frames; and a burst circuit for partitioning the modified frames into a plurality of payload sections, adding a preamble to each of the payload sections, and forming the second stream. | 09-03-2009 |
20090245524 | Apparatus and Method for Encoding/Decoding Signal - An encoding method and apparatus and a decoding method and apparatus are provided. The decoding method includes extracting a down-mix signal and down-mix identification information from an input bitstream, determining, based on the down-mix identification information, whether the down-mix signal is a 3D down-mix signal obtained by performing a three-dimensional (3D) rendering operation, and if the down-mix signal is not 3D down-mix signal, generating a 3D down-mix signal by performing a 3D rendering operation. Accordingly, it is possible to efficiently encode multi-channel signals with 3D effects and to adaptively restore and reproduce audio signals with optimum sound quality according to the characteristics of an audio reproduction environment. | 10-01-2009 |
20090262945 | STEREO ENCODING DEVICE, STEREO DECODING DEVICE, AND STEREO ENCODING METHOD - There is disclosed a stereo encoding device capable of accurately encoding a stereo signal at a low bit rate and suppressing delay in audio communication. The device performs monaural encoding in its first layer ( | 10-22-2009 |
20090274308 | Method and Apparatus for Processing a Media Signal - An apparatus for processing a media signal and method thereof are disclosed, by which the media signal can be converted to a surround signal by using spatial information of the media signal. The present invention provides a method of processing a signal, the method comprising of extracting spatial information and a downmix signal from a bitstream; and generating rendering information by using the spatial information and filter information having a surround effect, wherein the rendering information comprises first rendering information applied to one channel of the downmix signal extracted from the bitstream and then transmitted on the same channel and second rendering information applied to the channel and then transmitted on another channel. | 11-05-2009 |
20090310790 | Transmission of Audio Signals - In accordance with an example embodiment of the present invention, an apparatus is presented that comprises a multichannel audio transmitter which has a first mode for transmitting a multichannel audio signal and a second mode for transmitting at least a first and a second audio signal, each having fewer channels than the multichannel audio transmitter. A controller is configured to switch the multichannel audio transmitter from the first mode to the second mode when the first audio signal becomes available. | 12-17-2009 |
20100034393 | AD-HOC ADAPTIVE WIRELESS MOBILE SOUND SYSTEM - An ad-hoc Adaptive Wireless Mobile Sound System, comprises a) a Master device, capable of sending a message/query to one or more mobile phone nodes, to verify whether they hold in their memory a specific song/track and to learn their music playing capabilities; b) transmission means provided in the Master, to convey to the mobile nodes that do not have a specific file in their memory, if any, a compressed audio stream of the said file; c) software suitable to convey, in a streaming fashion, the compressed audio file over wireless connectivity; d) software provided in the Master receives to select, based on an answer to said query, an appropriate surround scheme/algorithm configuration that takes into account the mobile nodes capabilities; e) communication means provided in the Master to publish the surround scheme/algorithm configuration in which a playing role/channel allocated to each of the mobile nodes; and f) means provided in the Master to synchronize the mobile nodes and to order them to play a stream audio file according to the surround scheme. | 02-11-2010 |
20100040237 | REMOTE CONTROL INTERFACE FOR REPLACEMENT VEHICLE STEREOS - An interface circuit for interconnecting the fixed controls of a vehicle to a replacement stereo. The interface circuit is capable of receiving control signals from fixed controls, such as steering wheel controls, backseat controls, handlebar controls, and the like, and then transmitting corresponding control signals to a replacement stereo. In one embodiment, the output signals from the interface circuit are comprised of wireless signals, such as IR signals. In another embodiment, the interface device is programmable such that the interface device can be programmed to emit signals corresponding to the same signals that would be emitted from a handheld remote control sold in conjunction with an after-market stereo receiver. | 02-18-2010 |
20100166192 | INTEGRATED CIRCUIT FOR REDUCING RADIO FREQUENCY INTERFERENCE DUE TO ANTENNA EFFECTS - The invention provides an integrated circuit for reducing radio frequency interference due to antenna effects. In one embodiment, the integrated circuit includes a pre-stage audio processor and a post-stage power amplifier. The pre-stage audio processor receives a left channel input signal and a right channel input signal, processes the left channel input signal to obtain a positive left channel signal and a negative left channel signal, and processes the right channel input signal to obtain a positive right channel signal and a negative right channel signal. The post-stage power amplifier amplifies the positive left channel signal and the negative left channel signal to obtain a left channel output signal, and amplifies the positive right channel signal and the negative right channel signal to obtain a right channel output signal. | 07-01-2010 |
20100246830 | PATH SETTING METHOD AND APPARATUS FOR AUDIO SYSTEM, AND AUDIO SYSTEM - In a mixing system where a console, engine and I/O devices, each possessing a plurality of supply sources and destinations, are connected to a network, a plurality of transmission channels of the network are allocated to the individual devices. In response to human operator's connection instruction given via the console for instructing a connection between a supply source possessed by one of the devices and a supply destination possessed by another of the devices, the device possessing the supply source transmits an audio signal of the supply source to the network using one of the transmission channels allocated to the device. The device possessing the signal supply destination, for which the connection instruction has been given, receives the audio signal transmitted via the transmission channel and supplies the received audio signal to the supply destination. | 09-30-2010 |
20100284543 | AUDIO SYSTEM WITH BONDED-PERIPHERAL DRIVEN MIXING AND EFFECTS - In a system providing for delivery of audio signals from one or more source audio systems to two or more audio output sink systems, the sink systems establish duplex communication links (or bonds) to a bonding subsystem, which in turn is in duplex communication with the source audio systems. Data signals may be sent from sink systems, via the bonding subsystem, to request delivery of audio signals from selected audio source channels. In preferred embodiments, the sink systems may also request specific treatments of or modifications to audio signals to be sent to individual sinks in the sink systems. The bonding subsystem receives such treatment requests from the sink system and relays them to a matrix manager which initiates and controls the processing of source audio channels as required to comply with requests from the sink system. The matrix manager then delivers the treated or modified audio output channels to the bonding subsystem for delivery to the requesting sink systems. | 11-11-2010 |
20100290629 | STEREO SIGNAL CONVERTER, STEREO SIGNAL INVERTER, AND METHOD THEREFOR - A stereo signal converter capable of realizing encoding with less redundancy, low bit-rate, and high quality even if the positions of sound sources are different from one another. In this device, a sample difference analyzing section ( | 11-18-2010 |
20100303244 | METHOD AND MOBILE DEVICE FOR DELIVERING AUDIO DATA OVER SHORT RANGE WIRELESS COMMUNICAITON CHANNELS - A method and mobile device for delivering individual audio streams multiplexed in an audio data to at least one audio device through corresponding radio channels. The method includes establishing a communication channel with each of at least one audio device, receiving multiplexed audio data, extracting individual audio streams from the multiplexed audio data, allocating at least one of the individual audio streams to one or more communication channels, and transmitting the at least one of the individual audio streams to one or more of the at least one audio device through respective one or more communication channels. | 12-02-2010 |
20110026719 | CONFIGURABLE RECURSIVE DIGITAL FILTER FOR PROCESSING TELEVISION AUDIO SIGNALS - A television audio signal encoder includes a device that sums a left channel audio signal and a right channel audio signal to produce a sum signal. The device also subtracts one of the left and right audio signals from the other to produce a difference signal. The encoder also includes a configurable infinite impulse response digital filter that selectively uses one or more sets of filter coefficients to filter the difference signal. The set of filter coefficients is applied to the difference signal by a single multiplier in a recursive manner to prepare the difference signal for transmission. | 02-03-2011 |
20110075848 | Apparatus and Method for Generating a Level Parameter and Apparatus and Method for Generating a Multi-Channel Representation - A parameter representation of a multi-channel signal having several original channels includes a parameter set, which, when used together with at least one down-mix channel allows a multi-channel reconstruction. An additional level parameter is calculated such that an energy of the at least one downmix channel weighted by the level parameter is equal to a sum of energies of the original channels. The additional level parameter is transmitted to a multi-channel reconstructor together with the parameter set or together with a down-mix channel. An apparatus for generating a multi-channel representation uses the level parameter to correct the energy of the at least one transmitted down-mix channel before entering the down-mix signal into an up-mixer or within the up-mixing process. | 03-31-2011 |
20110075849 | Network System - A connecting node in a first sub-network system reserves a transmission channel in a connecting network, reads waveform data having a designated signal name from a TL frame in the first sub-network system, and writes the read waveform data into the reserved transmission channel in a TL frame in the connecting network, and a connecting node in a second sub-network system reserves a transmission channel in the second sub-network system, reads the waveform data having the designated signal name from the TL frame in the connecting network, and writes the read waveform data into the reserved transmission channel in a TL frame in the second sub-network system. | 03-31-2011 |
20110085669 | Method for Encoding and Decoding Multi-Channel Audio Signal and Apparatus Thereof - Methods and apparatuses for encoding and decoding a multi-channel audio signal are provided. In the encoding method, spatial information is calculated based on a multi-channel audio signal and a down-mix signal, and a compensation parameter that compensates for the down-mix signal is calculated based on the multi-channel audio signal and the down-mix signal. Thereafter, a bitstream is generated by encoding the spatial information, the compensation parameter, and the down-mix signal and combining the results of the encoding. Therefore, it is possible to prevent deterioration of the quality of sound regarding a multi-channel audio signal by compensating for the multi-channel audio signal using a compensation parameter that compensates for a down-mix signal. | 04-14-2011 |
20110142243 | SPEAKER SYNCHRONIZATION TECHNIQUE FOR WIRELESS MULTICHANNEL SOUND DATA TRANSMISSION SYSTEM - The present invention relates to sound data transmission between a wireless sound transmitter that transmits sound data received from a multimedia source, and a wireless sound speaker that outputs sound signal by receiving the sound data, and more particularly, to a method for compensation of a replay time delay between the wireless sound speakers occurring when the multichannel sound data is distributed and transmitted from the wireless sound transmitter to the multiple wireless sound speakers. The differences in the replay time points occurring between the speakers in a TDMA based multichannel wireless transmission system, are pre-compensated through the delay of the sound data in the WSDT. | 06-16-2011 |
20110206210 | STEREO SIGNAL PROCESSING CIRCUIT - A noise level of an output signal is maintained low. An adjacent interference detecting unit compares a signal level of a wide band signal which is a desired station signal of a relatively wide band and a signal level of a narrow band signal which is a desired station signal of a relatively narrow band, and judges that adjacent interference has occurred when the signal level of the narrow band signal is less than or equal to a predetermined level even though the signal level of the wide band signal is greater than or equal to a predetermined level. A variable amplifier ( | 08-25-2011 |
20110249818 | Transmission device and transmission method - A transmission device includes a transmission power setting unit that respectively sets a transmission power for transmitting a main sound signal indicating a main sound and transmission powers for transmitting one or two or more subsidiary sound signals which pertain to the main sound signal and which realize a predetermined sound effect, and a first communication unit that respectively transmits the main sound signal and the one or two or more subsidiary sound signals on time division channels using the same frequency band, based on the transmission powers set by the transmission power setting unit, wherein the transmission power setting unit sets the transmission power for the main sound signal to a first reference value, and sets the transmission powers for the subsidiary sound signals to a second reference value smaller than the first reference value. | 10-13-2011 |
20110286600 | WIRELESS AUDIO SYSTEM - A system for wireless transmission between a device such as a game controller and a base transceiver linked with a host device. Multiple controllers can be linked with the base transceiver through radio frequency transmission, and audio signals can be selectively transmitted therebetween. Audio commands can be introduced with manual controls at the controller for transmission to the base transceiver. Audio signals can be generated, mixed or otherwise processed by the combination of the host device and base transceiver for selective transmission to one or more controllers. The combination of manual switches, audio commands, and radio frequency transmission provides unique combinations of interaction between a person and the host device. | 11-24-2011 |
20110311058 | BROADCASTING RECEIVER AND BROADCAST SIGNAL PROCESSING METHOD - A digital broadcasting system which is robust against an error when mobile service data is transmitted and a method of processing data are disclosed. The mobile service data is subjected to an additional coding process and the coded mobile service data is transmitted. Accordingly, it is possible to cope with a serious channel variation while applying robustness to the mobile service data. | 12-22-2011 |
20120033817 | METHOD AND APPARATUS FOR ESTIMATING A PARAMETER FOR LOW BIT RATE STEREO TRANSMISSION - A method for estimating a parameter for low bit rate stereo transmission that includes deriving estimate of any time delay between left and right audio channels in a multi-channel signal from a time delay subsystem. A cross-correlation between the left and right audio channels in the time delay subsystem is employed. Thereafter a normalized cross-correlation within an inter-channel intensity difference (IID) processor is employed before deriving estimate of panning gains for the left and right audio channels from the IID processor. | 02-09-2012 |
20120070004 | Digital Audio Distribution - A master transmitter distributes a plurality of audio channels to one or more expansion receivers as a multiplexed audio stream. Control information is also transmitted between the master transmitter and the expansion receivers. Both the control information and the multiplexed audio stream are transmitted on the same cable allowing for reduced clutter and cheaper material and installation costs. | 03-22-2012 |
20120121091 | AMBIENCE CODING AND DECODING FOR AUDIO APPLICATIONS - A method comprising determining at least one first parameter, wherein the first parameter is dependent on a difference between at least two audio signals; determining at least one second parameter, wherein the second parameter is dependent on at least one directional component of the at least two signals; and generating at least one ambience coefficient value dependent on the at least one first parameter and the at least one second parameter. | 05-17-2012 |
20120177203 | AUDIO NETWORK SYSTEM AND METHOD OF DETECTING TOPOLOGY IN AUDIO SIGNAL TRANSMITTING SYSTEM - In an audio network system constructed from a main node and a plurality of satellite nodes each having a plurality of ports, the main node generates and transmits a main packet including audio signals of a plurality of channels. Each satellite node selects one of the plurality of ports in turn, and confirms whether the main packet arrives at the selected port every predetermined period or not. When the main packet arrives at the selected port every predetermined period, the main packet is received via the port by continuing selection of the port. In the case where reception of the main packet is lost, one is selected from the plurality of ports in turn, the operation to confirm arrival of the main packet is restarted, and another port at which the main packet arrives at the present stage is automatically found. | 07-12-2012 |
20120183146 | APPARATUS AND METHOD FOR POST-PROCESSING AND OUTPUTTING DIGITAL AUDIO DATA IN REAL TIME - A digital audio data output device having first and second post-processors that process received digital audio data in parallel. Each processor includes a mixer unit that processes received digital audio data on the fly in response to a channel mode control signal, and a volume control unit that adjusts volume level of output of the mixer unit on the fly in response to a volume level control signal. Each mixer unit includes first and second buffers that can respectively store first and second channel data, a calculator that calculates mix data from the outputs of the buffers, a third buffer that stores the mix data, and an output unit. The output unit selects and outputs one of the received digital audio data, the output of the first buffer, the output of the second buffer, the mix data, and output of the third buffer, as the output of the mixer unit. | 07-19-2012 |
20120201386 | Automatic Generation of Metadata for Audio Dominance Effects - Metadata comprising a set of gain values for creating a dominance effect is automatically generated. Automatically generating the metadata includes receiving multiple audio streams and a dominance criterion for at least one of the audio streams. A set of gains is computed for one or more audio streams based on the dominance criterion for the at least one audio stream and metadata is generated with the set of gains. | 08-09-2012 |
20120263304 | HOME DIGITAL AUDIOVISUAL INFORMATION RECORDING AND PLAYBACK SYSTEM - A method for operating a home digital audiovisual information recording and playback apparatus. The method includes: displaying menus with user-selectable system operation options; enabling a selection of desired audiovisual information for reproduction; effecting payment for the desired audiovisual information; inputting a user personal identification number; and downloading, from a main server, the desired audiovisual information after payment has been effected and a valid personal identification has been received. | 10-18-2012 |
20120263305 | METHOD AND APPARATUS FOR MULTIPLEXING AUDIO PROGRAM CHANNELS FROM ONE OR MORE RECEIVED BROADCAST STREAMS TO PROVIDE A PLAYLIST STYLE LISTENING EXPERIENCE TO USERS - A method and apparatus are provided for generating a personalized radio channel playlist by simultaneously buffering tracks from multiple received channels from one or more source streams and selectively playing back tracks from the buffered channels. Navigation tools permit users to skip buffered songs in their playlist (e.g., skip forward and backward). Users can specify favorite channels for building personal playlists, or multiple default playlist channels can be provided (e.g., by genre). Thumbs up/down buttons on the radio receiver permit entering a song or artist being played back into a favorites list that is used to search all channels for matches or a banned list used to block songs from future playlists. A matched channel carrying the favorite can be added to a playlist. Segments on the playlist can be played back in full or truncated to facilitate preview of playlist segments. | 10-18-2012 |
20120275602 | Reducing Power Consumption in Sink Devices by Having Sinks Receive Only Left Audio Channel or Right Audio Channel - A wireless audio device may realize power savings when processing multi-channel data, e.g. 2-channel stereo audio data, by splitting the multi-channel block data into separate data blocks for each channel, e.g. Left-channel data block and Right-channel data block, and processing each separate data block independently in the source device to generate respective data packets targeting corresponding sink devices, e.g. a Left earphone and a Right earphone. The source device may then transmit each data packet to a different corresponding sink device, e.g. a Left-channel packet to a Left earphone and a Right-channel packet to a Right earphone. The data packets may also include header information indicative of whether a next packet is intended for a given sink device, enabling sink devices to enter sleep mode when the header information indicates that a next packet is not intended for the given sink device, to save power. | 11-01-2012 |
20120275603 | MULTI-CHANNEL AUDIO PANEL - A method and apparatus for providing improved intelligibility of contemporaneously perceived audio signals. Differentiation cues are added to monaural audio signals to allow a listener to more effectively comprehend information contained in one or more of the signals. In a specific embodiment, a listener wearing stereo headphones listens to simultaneous monaural radio broadcasts from different stations. A differentiation cue is added to at least one of the audio signals from the radio reception to allow the listener to more effectively focus on and differentiate between the broadcasts. | 11-01-2012 |
20120288098 | METHOD FOR OPTIMIZING THE STEREO RECEPTION FOR AN ANALOG RADIO SET AND ASSOCIATED ANALOG RADIO RECEIVER - A method of optimizing stereo reception for an analog radio by applying the demodulated right sound signal (SD) and left sound signal (SG) as input to a decorrelation module having a variable decorrelation rate. The decorrelation rate of the decorrelation module is modified as a function of the reception quality coefficient “alpha” provided by the radio. The decorrelation module applies a higher decorrelation rate for a smaller reception quality coefficient “alpha” and applies a lower decorrelation rate for a larger reception quality coefficient “alpha. Also, a module for generating high-pitched sounds to recreate the high-frequency component (SHF) of the right or left sound signals which has been removed in the event of poor reception. | 11-15-2012 |
20120300942 | MULTI-CHANNEL BROADCASTING SYSTEM USING DIGITAL MATRIX AMPLIFIER AND METHOD OF CONTROLLING THE SAME - A multi-channel broadcasting system using a digital matrix amplifier performing the setting of respective equipment is provided to control the model equipment through a digital master controller. An 8-channel audio input unit | 11-29-2012 |
20120308013 | METHOD AND APPARATUS FOR REDUCING TDMA NOISE IN MOBILE COMMUNICATION TERMINAL - A mobile terminal includes an apparatus for reducing Time Division Multiple Access (TDMA) noise in the mobile communication terminal. The apparatus includes a first output path including a resistance element; a second output path not including a resistance element; a modem for, when detecting an event for outputting an audio signal, determining an output path of the audio signal and outputting a control signal indicating the determined output path; and a switch for switching according to the control signal and providing the audio signal to either the first output path or the second output path. | 12-06-2012 |
20130083927 | HEADPHONE POWER SYSTEM USING HIGH FREQUENCY SIGNAL CONVERSION - An apparatus and method for powering headphone electronics over a standard audio signal cable without interfering with the normal audio transmission or playback of transmitted audio signals. A software application resides on a cell/smart phone or other mobile device that combines the nominal audio output of such a mobile device, like music or spoken word, with a high frequency audio signal to produce a dual component signal. The high frequency component is decoded and rectified outside of the mobile device, either in a connector or on the structure of the headphones themselves, to produce a direct current (“DC”) that powers the headphones. The music or other audible signal component transferred over the audio cable is decoded in parallel and sent to the headphone speakers for normal playback. The invention provides an alternative power source to headphone electronics such as active noise cancelling headphones over the audio cable. | 04-04-2013 |
20130094652 | METHOD AND DEVICE FOR CONTROLLING THE BROADCASTING OF AUDIO CONTENTS BY TWO LOUDSPEAKERS - The broadcasting of audio contents by two loudspeakers is controlled by delivering a first audio content to the two loudspeakers and a further processing in which an auxiliary audio content is received. A second audio content is formed by temporally delaying the auxiliary audio content with a delay dependent on the spacing between the loudspeakers and on a distance between a first loudspeaker and a spot located in front of this first loudspeaker. The second audio content is delivered to the first loudspeaker. A third audio content is formed by inverting the auxiliary audio content. The third audio content is then delivered to the second loudspeaker. | 04-18-2013 |
20130142337 | METHOD AND APPARATUS TO SHAPE SOUND - The invention relates to sonic steerable antennae and their use to achieve a variety of effects. The invention comprises a method and apparatus for taking an input signal, replicating it a number of times and modifying each of the replicas before routing them to respective output transducers such that a desired sound field is created. This sound field may comprise a directed beam, focus beam or a simulated origin. Further, “anti-sound” may be directed so as to create nulls (quiet spots) in an already existing sound field. The input signal replicas may also be modified in way which changes their amplitude or they may be filtered to provide the desired delaying. Reflective or resonant surfaces may be used to achieve a surround sound effect, a microphone may be located in front of an array of loudspeakers, beams of light may be used to identify the present focal position, a limiting device may be used to ensure that clipping or distortion is reduced when more than one input signal is output by the same device and the concept of beam directivity may be used to achieve input nulls or beams in a microphone made up of an array of input transducers. Further, sound field shaping information may be associated with an audio signal to be broadcast. | 06-06-2013 |
20130170646 | APPARATUS AND METHOD FOR TRANSMITTING AUDIO OBJECT - An apparatus and method for transmitting a plurality of audio objects using a multichannel encoder and a multichannel decoder are provided. The audio object encoder includes a multichannel encoder determination unit to determine a multichannel encoder to be used for encoding of a plurality of audio objects according to the number of the audio objects, an encoding unit to generate an encoded signal by encoding the plurality of audio objects using the determined multichannel encoder, and a multichannel audio object signal generation unit to generating a multichannel audio object signal, by multiplexing sound image localization information of the plurality of audio objects along with the encoded signal. | 07-04-2013 |
20130195276 | Multi-Channel Audio Processing - A method including: receiving at least a first input audio channel and a second input audio channel; and using an inter-channel prediction model to form at least an inter-channel direction of reception parameter. | 08-01-2013 |
20130259237 | HEARING ASSISTANCE SYSTEM AND METHOD - A hearing assistance system and method for wireless RF audio signal transmission from at least one audio signal source to ear level receivers, wherein a close-to-natural hearing impression is to be achieved. At least one parameter of the RF signal as received from a transmission unit at a respective receiver unit to create left ear RF signal measurement data and right ear RF signal measurement data, respectively. The angular localization of each transmission unit is obtained by comparing, for each transmission unit, the left ear RF signal measurement data and the right ear RF signal measurement data. The audio signals are processed and distributed according to the estimated angular localization of each transmission unit in a manner so that the angular localization impression of the audio signals from each transmission unit as perceived by the user corresponds to the estimated angular localization of the respective transmission unit. | 10-03-2013 |
20130279699 | Information Providing System - An information providing system | 10-24-2013 |
20130287212 | Method And Apparatus For Multiplexing Audio Program Channels From One Or More Received Broadcast Streams To Provide A Playlist Style Listening Experience To Users - Methods and apparatuses provide personalized radio by outputting selected songs from multiple channels from one or more source streams. Users can specify favorite channels for building their personal playlists, or multiple default playlist channels can be provided by genre or other criteria. User like/dislike inputs via the radio receiver generate filter data used to search all channels for matches or block songs from playback. Filter data can also be based on virtual DJ recommendations. Channel searching for matches involves monitoring real-time song and artist labels or other metadata for all channels carried in a separate data channel. Personalization can also be provided by using filter data to select content from a mixed channel comprising content from a selected group of channels. Connectivity options and web interfaces are provided to facilitate transfer and sharing of customization parameters for personalized radio configuration. | 10-31-2013 |
20130322633 | METHODS AND SYSTEMS FOR IDENTIFYING CONTENT TYPES - System and methods are provided configured to reveal differences in content, such as commercial and program content. An input port may be configured to receive a first plurality of bit stream audio channels. A circuit may optionally be configured to enhance artifacting, noise, and/or bit rate errors and may optionally reduce redundant signal information. A signal processor circuit may be configured to transform the first plurality of bit stream audio channels into a frequency domain. A spectrum analysis system may be configured to compare properties of the first plurality of bit stream audio channels to one or more reference signals. An identification circuit may be configured to identify different content types included in the first plurality of bit stream audio channels. | 12-05-2013 |
20130343547 | Adaptive Bandwidth Management of IBOC Audio Signals During Blending - A method and apparatus are provided for smoothly blending analog and digital portions of a composite digital audio broadcast signal by using look ahead metrics computed from previously received audio frames to dynamically adjust either stereo separation or bandwidth or both of the digital audio portion of the digital audio broadcast signal to produce an adjusted digital audio portion that is blended with the analog audio portion. | 12-26-2013 |
20130343548 | METHOD AND SYSTEM FOR MULTI-CHANNEL MIXING FOR TRANSMISSION OF AUDIO OVER A NETWORK - A method and system for providing remote access to multi-channel audio by periodically polling channels of audio produced by, e.g., an application program by calling an Application Programming Interface (API). A method performs the polling to retrieve audio data from multiple channels and to mix the multiple channels into a mixed multichannel audio that is communicated to a remote computing device. The method transmits a sample minimum duration of audio data retrieved from all channels during at polling interval to provide low latency transmission of audio to remotely connected computing devices. | 12-26-2013 |
20140133659 | MANAGEMENT OF BROADCAST AUDIO LOUDNESS - To control loudness during a junction between different types of broadcast content, such as a junction between programme and commercial or promotional content, representative loudness values for content respectively before (P) and after (C) the junction are received from a playout automation system. A time-varying gain control is applied before and after the junction in order to smooth loudness around the junction. The audio gain is smoothly increased prior to the junction to a gain (P+C)/2 P times higher than the original gain value. Then, the gain is reduced shortly before the junction to a value (P+C)/2 C times lower than the original gain value. After the junction, the gain is returned smoothly to the original value. | 05-15-2014 |
20140185810 | OBJECT-BASED 3-DIMENSIONAL AUDIO SERVICE SYSTEM USING PRESET AUDIO SCENES - Provided are an object-based three dimensional (3-D) audio service system using preset audio scenes and a method thereof. The system and the method are suggested for enabling a user to easily and conveniently watch and listen an object based 3-D audio service by eliminating inconvenience that requires a user to control each of object audio signals of sound sources. The system includes: audio input means for inputting an audio signal; preset audio scene generating means for extracting object audio signals from the audio signal inputted through the audio input means and generating more than one of 3-D audio scene information by arranging the extracted object audio signals in a 3-D space and editing features of each object; and encoding means for encoding and multiplexing the audio signal and the 3-D audio scene information for each object audio signal. | 07-03-2014 |
20140314237 | Asynchronously Streaming High Quality Audio of a Live Event From a Handheld Device - An audio streaming system includes a handheld computing device that asynchronously streams audio to a storage subsystem. The handheld computing device receives and buffers audio data of contiguous audio samples and, after a predefined amount of contiguous audio samples has been buffered, assigns an index for that predefined amount of contiguous audio samples and asynchronously transmits the index and those contiguous audio samples to a storage subsystem of a broadcast server system. The handheld computing device, upon determining that the predefined amount of contiguous audio samples has been received by the storage subsystem, transmits a notification message to an application server of the broadcast server system that includes the assigned index and indicates that the corresponding contiguous audio samples are stored on the storage subsystem. The notification message causes the application server to fetch those audio samples according to the index and process them for broadcasting to client computing devices. | 10-23-2014 |
20140328484 | METHOD AND DEVICE FOR SYNCHRONIZING SOUND SOURCES - The device for broadcasting sounds for playing an audio content coming from at least one audio content server includes: a base ( | 11-06-2014 |
20140334625 | Digital Audio Distribution - A master transmitter distributes a plurality of audio channels to one or more expansion receivers as a multiplexed audio stream. Control information is also transmitted between the master transmitter and the expansion receivers. Both the control information and the multiplexed audio stream are transmitted on the same cable allowing for reduced clutter and cheaper material and installation costs. | 11-13-2014 |
20140348327 | Synchronization of Multi-Channel Audio Communicated over Bluetooth Low Energy - This document describes techniques for synchronizing rendering of multi-channel audio output. First audio data corresponding to a first audio channel and second audio data corresponding to a second audio channel may be received. The first and second audio data may be configured for simultaneous rendering. A transmission schedule for wirelessly transmitting audio data to each of first and second audio rendering devices may be configured, according to which the first audio data may be scheduled for transmission to the first audio rendering device after the second audio data is scheduled for transmission to the second audio rendering device by a first length of time. An indication may be wirelessly transmitted to the second audio rendering device to delay rendering audio data by the first length of time. The first and second audio data may be wirelessly transmitted to the first and second audio rendering devices according to the transmission schedule. | 11-27-2014 |
20140369502 | DIGITAL AUDIO SOFTWARE STEREO PLUGIN - A process and system for enhancing and customizing audio recording and editing comprises receiving an input audio sound; setting a preset for the input audio sound to create a presetted audio sound; tone adjusting the presetted audio sound to create a tone adjusted presetted audio; expanding the tone adjusted presetted audio in a horizontal plane to create an presetted tone adjusted expanded audio; and outputting the presetted tone adjusted expanded audio. There are three options for selecting the preset. These are: ten or more presets for different genres of music; auto-preset that is selected by genre in metadata of playback material; and a single generic preset that covers all music. Presetting comprises parallel processing the input audio through: a module that is a low pass filter with dynamic offset; an envelope controlled bandpass filter; a high pass filter; adding an amount of dynamic synthesized sub bass to the audio; and combining the four treated audio signals in a summing mixer with the original audio. The adjustment step comprises a first section for adjusting a low frequency tone; a second section for adjusting a mid frequency tone; a third section for adjusting a high frequency tone; and mixing the audio outputs processed by the first, second and third sections to produce an output audio sound. | 12-18-2014 |
20140369503 | SIMULTANEOUS BROADCASTER-MIXED AND RECEIVER-MIXED SUPPLEMENTARY AUDIO SERVICES - A combined signal (Z) is provided as an additive mix of a secondary audio signal (Y) and a phase-inverted reduced primary signal (X | 12-18-2014 |
20150055781 | WIRELESS SPEAKER DEVICE AND WIRELESSLY MULTI-CHANNEL AUDIO SYSTEM THEREOF - A wireless speaker device includes a speaker module, a processing module, a wireless module and a control module. The processing module may receive the mate signal sent by the adjacent wireless speaker device through the wireless module or send the mate signal sent to the adjacent wireless speaker device through the wireless module to establish a wireless multi-channel audio system. Therefore, the connections of the wireless speaker devices within the wireless multi-channel audio system are simplified. Ans the cost time to mate for connection is reduced. Also, the connection is automated to be convenient for users to operate. | 02-26-2015 |
20150055782 | System and Method for Wirelessly Transmitting and Receiving Customized Data Broadcasts - A system for wirelessly transmitting and receiving customized data broadcasts comprising at least one computer apparatus running an application for customized data broadcasts. The computer apparatus uses the application to transmit and/or receive at least one broadcast. The system is further comprised of a server network infrastructure with: the application, at least one application server, at least one web server; and at least one database/information server. | 02-26-2015 |
20150086022 | IMPROVEMENT OF AN AUDIO SIGNAL OF AN FM STEREO RADIO RECEIVER BY USING PARAMETRIC STEREO - The invention relates to a method for improving a stereo audio signal of an FM stereo radio receiver. The method comprises determining one or more parametric stereo parameters based on the stereo audio signal in a frequency-variant or frequency-invariant manner. Preferably, these PS parameters are time- and frequency-variant. Moreover, the method comprises generating the improved stereo signal based on a first audio signal and the one or more parametric stereo parameters. The first audio signal is obtained from the stereo audio signal, e.g. by a downmix operation. | 03-26-2015 |
20150124971 | AUDIO BROACAST SOURCES SWITCHING BY GEOGRAPHIC LOCATION - The automated switching of broadcast sources of an audio content stream based on the geographic location of the physical unit that is receiving the audio content stream. For instance, while rendering a particular audio content stream from a first broadcasting source, a system may have an identity of one or more alternative possible broadcasting sources available for the same audio content stream for that relative geographic location. In response to some decision making, the system may decide to switch broadest sources for that audio content stream. Thus, the user continues to listen to the audio content stream without being subject to possible negative consequences of continuing to listen to the audio content stream as received from the original broadcast station. Data transmitted by the broadcast stations themselves need not be relied upon. Thus, the automated switching is accomplished even outside of regions in which broadcast stations transmit such data. | 05-07-2015 |
20150334488 | METHOD AND APPARATUS FOR COMMUNICATING AUDIO DATA - A method and an apparatus are provided for transmitting audio data. The method includes setting a connection with a plurality of slave devices by using a short range wireless communication protocol, generating a data packet comprising the audio data, and repetitively transmitting the data packet to the plurality of slave devices through a multicast/broadcast channel a number of times. | 11-19-2015 |
20150381296 | WIRELESS TRANSMISSION OF SOUND SIGNALS TO MULTIPLE DISCRETE SPEAKERS - Systems and methods for wireless communication of sound signals to multiple discrete speakers to establish a rich wireless audio system for use in multiple environments is provided. In one embodiment of the present disclosure, a computing device receives a multiplexed audio signal containing multiple audio channels and demultiplexes the signal and transmits separate demultiplexed signals to wireless speakers, where the separate wireless signals are played by the individual wireless speakers. In another embodiment of the present disclosure, a computing device receives a multiplexed audio signal containing a left and a right audio signal and demultiplexes the signal and uses the left and right audio signals to create a bass signal for use with a three way sound system. In yet another embodiment of the present disclosure, a wireless speaker is configured to listen and intercept a wirelessly transmitted multiplex signal and demultiplex the signal to play a predetermined audio channel. | 12-31-2015 |
20160065743 | STEREO ECHO SUPPRESSING DEVICE, ECHO SUPPRESSING DEVICE, STEREO ECHO SUPPRESSING METHOD, AND NON TRANSITORY COMPUTER-READABLE RECORDING MEDIUM STORING STEREO ECHO SUPPRESSING PROGRAM - According to the embodiment of the present invention, the stereo echo suppressing device that suppresses an acoustic echo signal based on a near-end input signal and far-end signals of two channels as a stereo signal includes: first and second far-end signal amplitude spectrum calculating units for calculating amplitude spectrums of a first far-end signal and a second far-end signal; a near-end input signal amplitude spectrum calculating unit for calculating an amplitude spectrum of the near-end input signal; first and second estimation echo signal estimating units for estimating amplitude spectrums of a first estimation echo signal and a second estimation echo signal; first and second echo suppressing units for suppressing the acoustic echo signal; first and second echo path characteristic updating unit for calculating and updating echo path characteristics of the first far-end signal and the second far-end signal. | 03-03-2016 |
20160066116 | USING SINGLE BITSTREAM TO PRODUCE TAILORED AUDIO DEVICE MIXES - Audio stems are generated to contain audio content to be mixed by recipient devices. Multiple sets of mixing instructions for multiple audio channel configurations are determined, for example, based on input of audio producers. Each set of mixing instructions is to be used for mixing the audio stems for rendering in a corresponding audio channel configuration. A bitstream is generated to carry both the audio stems and the sets of mixing instructions. A recipient device receives the bitstream as the input. The recipient device determines a specific audio channel configuration to be used for rendering the plurality of audio stems. Based on that determination, a specific set of mixing instructions is retrieved from the bitstream and used to mix the audio stems. | 03-03-2016 |
20160088411 | SYSTEM AND METHOD FOR MODULAR ON-DEMAND AUDIO PROCESSING, AMPLIFICATION AND DISTRIBUTION - The present disclosure relates to a system and method for processing, amplification and distribution of audio signals. In an embodiment, the method includes receiving at least one digital audio input signal from one or more audio sources via wireless or wired communications. In an embodiment, address information accompanying the at least one digital audio input signal is identified to determine to which modular processor/amplifier unit the audio signal is to be directed. In dependence upon identification of one or more modular processor/amplifier units, the identified one or more modular processor/amplifier units are awakened, and the processed/amplified audio signals is directed to one or more audio listening zones. | 03-24-2016 |
20160127848 | MULTIDIMENSIONAL VIRTUAL LEARNING SYSTEM AND METHOD - A process and system for generating three dimensional sound conferencing includes generating a virtual map with a plurality of positions, each participant selecting one of the positions, determining a direction from each position to each other position on the map, determining a distance from each position to each other position on the map, receiving sound from each participant, mixing the received sound, transforming the mixed sound into binaural audio, and directing the binaural audio sound to each participant via a speaker associated with the virtual position of the speaking participant. The result is a clarified sound that gives to the listening participant a sense of where the speaking participant is positioned relative to the listening participant. | 05-05-2016 |
20160148618 | Packet Loss Concealment Apparatus and Method, and Audio Processing System - The present application relates to packet loss concealment apparatus and method, and audio processing system. According to an embodiment, the packet loss concealment apparatus is provided for concealing packet losses in a stream of audio packets, each audio packet comprising at least one audio frame in transmission format comprising at least one monaural component and at least one spatial component. The packet loss concealment apparatus may comprises a first concealment unit for creating the at least one monaural component for a lost frame in a lost packet and a second concealment unit for creating the at least one spatial component for the lost frame. According to the embodiment, spatial artifacts such as incorrect angle and diffuseness may be avoided as far as possible in PLC for multi-channel spatial or sound field encoded audio signals. | 05-26-2016 |
20160196101 | Unitary Electronic Speaker Device For Receiving Digital Audio Data And Rendering The Digital Audio Data | 07-07-2016 |
20160255454 | Spatial Audio Processing System and Method | 09-01-2016 |
20160381484 | INFORMATION PROCESSING METHOD AND ELECTRONIC DEVICE - Embodiments of the present disclosure provide an information processing method and an electronic device. The method comprises: modulating a first audio signal associated with a first channel in a first sound source file onto a first ultrasound signal to obtain a first modulated ultrasound signal; modulating a second audio signal associated with a second channel in a second sound source file onto a second ultrasound signal to obtain a second modulated ultrasound signal; transmitting a first ultrasound wave associated with the first modulated ultrasound signal, such that the first ultrasound wave, once reflected by a first reflection plane, produces a first audible sound signal corresponding to the first audio signal; and transmitting a second ultrasound wave associated with the second modulated ultrasound signal, such that the second ultrasound wave, once reflected by a second reflection plane, produces a second audible sound signal corresponding to the second audio signal. | 12-29-2016 |
20170236521 | ENCODING OF MULTIPLE AUDIO SIGNALS | 08-17-2017 |