| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 381026000 | Stereo sound pickup device (microphone) | 61 |
| 20080260166 | SYSTEM FOR OBJECTIVE QUANTIFICATION OF LISTENER ENVELOPMENT OF A LOUDSPEAKERS-ROOM ENVIRONMENT - A system quantifies listener envelopment in a loudspeakers-room environment. The system includes a binaural detector that receives frequency modulated audible noise signals from multiple loudspeakers. The binaural detector generates detected signals that are analyzed to determine an objective listener envelopment. The envelopment is based on binaural activity of one or more sub-bands of the detected signal. | 10-23-2008 |
| 20090028347 | AUDIO CAMERA USING MICROPHONE ARRAYS FOR REAL TIME CAPTURE OF AUDIO IMAGES AND METHOD FOR JOINTLY PROCESSING THE AUDIO IMAGES WITH VIDEO IMAGES - Spherical microphone arrays provide an ability to compute the acoustical intensity corresponding to different spatial directions in a given frame of audio data. These intensities may be exhibited as an image and these images are generated at a high frame rate to achieve a video image if the data capture and intensity computations can be performed sufficiently quickly, thereby creating a frame-rate audio camera. A description is provided herein regarding how such a camera is built and the processing done sufficiently quickly using graphics processors. The joint processing of and captured frame-rate audio and video images enables applications such as visual identification of noise sources, beamforming and noise-suppression in video conferenceing and others, by accounting for the spatial differences in the location of the audio and the video cameras. Based on the recognition that the spherical array can be viewed as a central projection camera, such joint analysis can be performed. | 01-29-2009 |
| 20090196429 | SIGNALING MICROPHONE COVERING TO THE USER - A mechanism is provided that monitors secondary microphone signals, in a multi-microphone mobile device, to warn the user if one or more secondary microphones are covered while the mobile device is in use. In one example, smoothly averaged power estimates of the secondary microphones may be computed and compared against the noise floor estimate of a primary microphone. Microphone covering detection may be made by comparing the secondary microphone smooth power estimates to the noise floor estimate for the primary microphone. In another example, the noise floor estimates for the primary and secondary microphone signals may be compared to the difference in the sensitivity of the first and second microphones to determine if the secondary microphone is covered. Once detection is made, a warning signal may be generated and issued to the user. | 08-06-2009 |
| 20100008511 | MICROPHONE UNIT FOR STEREOPHONIC RECORDING - To provide a microphone unit for stereophonic recording capable of adjusting an intersecting angle of sound collecting axes in accordance with conditions without impairing directivity and sound quality of the microphone. Respective rotation bases ( | 01-14-2010 |
| 20100061559 | Microphone Having A Three-pin Socket And A USB Socket - A microphone comprises a three-pin socket, a first USB socket and a USB adapter. The first USB socket is fixed within the three-pin socket. The three-pin socket comprises an inserted block and three pins. The three pins are fixed on the inserted block. The first USB socket is embedded in the inserted block. The USB adapter comprises a USB plug which matches the first USB socket and a second USB socket which has a different dimension from the first USB socket. The USB plug and the second USB socket are connected electrically. The microphone can be normally used at all occasions. The dimension of the finished product is reduced so as to save a very large space. The microphone can be electrically connected with a USB data line with a USB plug having a different dimension from the first USB socket. | 03-11-2010 |
| 20100091998 | IMAGE CAPTURING APPARATUS - The use of sound signals from sounds collected by four non-directional sound collectors facilitates calculation for generating surround sound signals, for example, when multi-channel surround sound signals are generated, and prevents the size of the entire apparatus from increasing. Surround sound signals are generated from sound signals of sounds collected by a microphone unit composed of a first sound collector, a second sound collector disposed posterior to the first sound collector, a third sound collector, and a fourth sound collector. | 04-15-2010 |
| 20100166195 | ACOUSTIC APPARATUS - An acoustic apparatus without increasing noise etc. even when plural directional microphones collect sounds from a place of the same distances is provided. Sound signals output from the microphone arrays are subjected to phase shift by phase shift circuits | 07-01-2010 |
| 20100195836 | WIRELESS COMMUNICATION SYSTEM AND METHOD - A communication system, comprising: a transmission unit comprising at least two microphones, with a separate audio signals channel for each microphone, a first ear unit and, a second ear unit worn at the each side of the user's head, each ear unit comprising a receiver unit; the transmission unit comprising means for transmitting at least a first channel and a second channel of the audio signals to the first and second ear unit, at least one of the receiver units being capable of receiving the at least first and second audio signal channel, at least one of the ear units comprising audio signal processing means for generating processed audio signals received via the at least first and second audio signal channel, with the first ear unit and the second ear unit comprising means for stimulating the user's hearing at the right ear and the left ear, accordingly. | 08-05-2010 |
| 20100202621 | SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD AND PROGRAM - There is provided a signal processing device including: an audio signal acquisition portion that acquires audio signals; an external signal acquisition portion that acquires external signals; an output signal generation portion that generates output signals from the audio signals and the external signals; a mode setting portion that sets an external mode as an operation mode; and a fade control portion that controls the output signal generation portion in accordance with the operation mode. When the external mode is set, the fade control portion causes the output signal generation portion to generate the output signal for one of the right ear and the left ear of the user from at least the external signal, and also to generate the output signal for the other ear from at least the audio signal. | 08-12-2010 |
| 20110064230 | Phase layering apparatus and method for a complete audio signal - The present invention relates to an apparatus and method for redeeming otherwise closed and concealed information contained in audio signals. This includes both the primary reference signal, and a plurality of redundant duplicate signals, substantially identical in all respects to the primary reference signal except in relation to magnitude and phase, for the purpose of unfolding, or opening the audio signal content into layers that result in an omni-directional acoustic signal, representing the sound as it would behave in nature. The audio reproduction system uses an in-phase circuit and a separate phase layering technique circuit to drive independent multiple mixed channels, to produce an open, substantially complete sound from a discrete audio signal, for the purpose of enabling a substantially complete audio signal to be formed, or to transform existing incomplete audio signals into a substantially complete audio signal. | 03-17-2011 |
| 20110069842 | STEREO MICROPHONE - A stereo microphone includes: a supporter that is made of an elastic material and fixes two unidirectional microphone units at certain angles; and a moving part that applies external force to a part of the supporter by being operated. An angle formed by main axes of the respective unidirectional microphone units is changed by deformation of the supporter by the external force. | 03-24-2011 |
| 20110103594 | STEREO MICROPHONE UNIT AND STEREO MICROPHONE - A stereo capacitor microphone unit includes: two unidirectional microphone units integrally formed with respective fixed electrodes of the unidirectional microphone units facing each other; and an insulating spacer that is interposed between the fixed electrodes and provided with a gap formed at a portion of an outer periphery towards radial direction. The gap communicates fixed electrode rear spaces of the respective unidirectional microphone units with an external space to serve as a common rear acoustic terminal for the unidirectional microphone units. | 05-05-2011 |
| 20110135101 | AUDIO REPRODUCTION APPARATUS AND CONTROL METHOD FOR THE SAME - There is provided an audio reproduction apparatus. The audio reproduction apparatus comprises a first acquisition unit, a determination unit, a calculation unit, a second acquisition unit, and a generation unit. The configuration of the audio reproduction apparatus enables changing a head-related transfer function for signal processing in audio signal reproduction in accordance with the state of the audio recording apparatus at the time of audio signal acquisition. | 06-09-2011 |
| 20110158416 | SOUND PICKUP APPARATUS AND SOUND PICKUP METHOD - Provided is a sound pickup apparatus that increase the flexibility in installation of microphones, while enabling sound from a sound source to be picked up in stereo without using the information on the current positions of the microphones. The sound pickup apparatus includes a microphone ( | 06-30-2011 |
| 20110194703 | Stereo Microphone - An output circuit of a bidirectional side microphone element includes an inverting amplifier inverting a phase and outputting an inverted signal, adds a non-inverted output signal of the side microphone element to an output signal of a middle microphone element having unidirectivity to produce a signal for one channel of the left and right channels; and adds an inverted output signal of the side microphone element being the output signal from the inverting amplifier to the output signal of the middle microphone element to produce another signal for the other channel. An input resistor and a feedback resistor to the inverting amplifier are dividable. The division ratio of the input resistor to the feedback resistor is varied to change the levels of the non-inverted output signal and the inverted output signal of the side microphone element, and to change the angle between the left and right directional axes. | 08-11-2011 |
| 20110194704 | ENHANCED SPATIALIZATION SYSTEM WITH SATELLITE DEVICE - A system enhances spatialization in which spatial information about sound sources at an originating location is represented in an audio signal. The system applies a phase difference analysis to the signals received from an array of spaced apart input devices or microphones to derive spatial or directional information about the relative directions of one or more satellite input devices or microphones. The signals from the satellite input devices or microphones are mixed by a function of their respective directions to generate a multichannel output signal. When processed by a remote or local system, the output signal provides a representation of the relative directions of the sound sources at the originating location at a receiving location. | 08-11-2011 |
| 20110268281 | AUDIO SPATIALIZATION USING REFLECTIVE ROOM MODEL - Described are systems and methods performed by computer to reduce crosstalk produced by loudspeakers when rendering binaural sound that is emitted from the loudspeakers into a room. The room may have sound-reflecting surfaces that reflect some of the sound produced by the loudspeakers. To reduce crosstalk, a room model stored by the computer, is accessed. The room model models at least sound reflected by one or more of the physical surfaces. The room model is used to calculate a model of an audio channel from the loudspeakers to a listener. The model of the audio channel models sound transmission from the loudspeakers to the listener. The computer uses the model of the audio channel to cancel crosstalk from the loudspeakers when rendering the binaural sound. | 11-03-2011 |
| 20110311064 | SYSTEM AND METHOD FOR STEREOPHONIC ACOUSTIC ECHO CANCELLATION - Disclosed herein are systems, methods, and non-transitory computer-readable storage media for stereophonic acoustic echo cancellation. The method includes collecting, at a same time, a first audio sample of an audio source from a first omnidirectional microphone and a second audio sample of the audio source from a second omnidirectional microphone. The method includes delaying the second audio sample by a first amount of time to yield a delayed second audio sample and combining the delayed second audio sample with the first audio sample to produce a first channel, then delaying the first audio sample by a second amount of time to yield a delayed first audio sample and combining the delayed first audio sample with the second audio sample to produce a second channel. Then the method includes outputting the first channel and the second channel as a stereo audio signal of the audio source. | 12-22-2011 |
| 20120177206 | EAR SPEAKER DEVICE - An ear speaker device includes an electroacoustic transducer including a housing mounted at a predetermined position of listener's head, a speaker unit mounted on one surface in the housing, and positioned away from an entrance of the listener's external acoustic meatus for a predetermined distance when the housing is mounted on the listener's head, and a tubular duct extended so as to allow a sound generated by the housing in the inner space thereof to reach the vicinity of the entrance of the listener's external acoustic meatus, and a hole for emitting sound of the duct is oriented to the opposite direction with respect to the entrance of the external acoustic meatus; and a mounting part used for mounting the electroacoustic transducer on the listener's head in a manner that the predetermined distance is provided between the speaker unit and the entrance of the listener's external acoustic meatus. | 07-12-2012 |
| 20120230498 | STEREO RIBBON MICROPHONE - A stereo ribbon microphone includes four ribbon microphone units disposed in a circle on a single horizontal plane. The ribbon microphone units are alternately assigned to a right channel and a left channel along the circumferential of the circle. | 09-13-2012 |
| 20120288101 | STEREO MICROPHONE - A stereo microphone has four condenser microphone units having respective directional axes in the same horizontal plane. The four units each have unidirectivity and a quadrangular shape viewed from the direction of the directional axis. The units are disposed by rotating the directional axes of adjacent units by 90°. A pair of two units diagonally positioned and having the directional axes directed at 180° to each other collaborate with each other to form a pair of bidirectional microphone units. | 11-15-2012 |
| 20130044884 | Apparatus and Method for Multi-Channel Signal Playback - Techniques are presented for creating multichannel output signals from input audio signals. A first signal is determined based on a number of subbands into which the input audio signals are divided and based at least in part on a directional estimation wherein the subbands having dominant sound source directions are emphasized relative to subbands having directional estimates that deviate from directional estimates of the dominant sound source directions. A second signal is determined based on the number of subbands wherein an ambient component is introduced to create a perception of an externalization for a sound image. A resultant audio signal is created using the first and second signals. The resultant audio signal is one of a number of multichannel signals. Additionally, it is determined whether binaural audio output or multichannel audio output (or both) is to be output, and the appropriate number of audio output signals are determined and output. | 02-21-2013 |
| 20130108059 | STEREO MICROPHONE DEVICE | 05-02-2013 |
| 20130108060 | STEREO MICROPHONE DEVICE | 05-02-2013 |
| 20130216046 | Narrow Directional Stereo Microphone - A narrow directional stereo microphone includes a narrow directional mid unit disposed such that the directional axis thereof aligns to the major axis of a microphone body, and a unidirectional right unit and a unidirectional left unit disposed symmetrically with respect to the major axis such that directional axes of the right and left units are perpendicular to the major axis, wherein signals output from the mid unit are sent to one of a diaphragm and a fixed electrode of the right unit and to one of a diaphragm and a fixed electrode of the left unit, and right channel signals are output from the other of the diaphragm and the fixed electrode of the right unit, and left channel signals are output from the other of the diaphragm and the fixed electrode of the left unit. | 08-22-2013 |
| 20130216047 | APPARATUS FOR GENERATING AN ENHANCED DOWNMIX SIGNAL, METHOD FOR GENERATING AN ENHANCED DOWNMIX SIGNAL AND COMPUTER PROGRAM - An apparatus for generating an enhanced downmix signal on the basis of a multi-channel microphone signal has a spatial analyzer configured to compute a set of spatial cue parameters having a direction information describing a direction-of-arrival of a direct sound, a direct sound power information and a diffuse sound power information on the basis of the multi-channel microphone signal. The apparatus also has a filter calculator for calculating enhancement filter parameters in dependence on the direction information describing the direction-of-arrival of the direct sound, in dependence on the direct sound power information and in dependence on the diffuse sound power information. The apparatus also has a filter for filtering the microphone signal, or a signal derived therefrom, using the enhancement filter parameters, to obtain the enhanced downmix signal. | 08-22-2013 |
| 20140050326 | Multi-Channel Recording - An apparatus including a microphone array and a removing system. The microphone array includes a binaural microphone system having first and second transducers, and a voice microphone system having at least one third transducer. The removing system is configured to remove, from signals created from the binaural microphone system, components corresponding to sound of a user's voice sensed at the at least one third transducer. | 02-20-2014 |
| 20140126726 | ENHANCED STEREOPHONIC AUDIO RECORDINGS IN HANDHELD DEVICES - Methods and systems are provided for enhanced stereo audio recordings in electronic devices. Stereophonic recording performance in an electronic device, using a first microphone and a second microphone in the electronic device, may be assessed; and processing of signals generated by the first microphone and the second microphone may be configured based on the assessed stereophonic recording performance. The configuring may comprises adaptively modifying the processing to enhance stereophonic recording performance, to match or approximate an ideal performance. The assessing of the stereophonic recording in the electronic device may be based on a type of each of the first microphone and the second microphone, and/or based on a spacing therebetween. The processing may be adaptively modified to simulate directional reception of signals by the first microphone and the second microphone when the microphones are omnidirectional. | 05-08-2014 |
| 20140185814 | BOUNDARY BINAURAL MICROPHONE ARRAY - A boundary binaural microphone array includes a pair of microphones spaced from one another by a distance between approximately 5 cm and 30 cm. The boundary binaural microphone array has a structural support that locates the microphones no more than approximately 4 cm off of a surface upon which the array is placed. The microphones are separated by a sound barrier that provides an interaural level difference in the amplitudes of the sound signals sensed by the two microphones. | 07-03-2014 |
| 20140198918 | Configurable Three-dimensional Sound System - A method and a system for simultaneously generating configurable three-dimensional (3D) sounds are provided. A 3D sound processing application (3DSPA) in operative communication with a microphone array system (MAS) is provided on a computing device. The MAS forms acoustic beam patterns and records sound tracks from the acoustic beam patterns. The 3DSPA generates a configurable sound field on a graphical user interface using recorded or pre-recorded sound tracks. The 3DSPA acquires user selections of configurable parameters associated with sound sources from the configurable sound field. The 3DSPA dynamically processes the sound tracks using the user selections to generate a configurable 3D binaural sound, surround sound, and/or stereo sound. The 3DSPA measures head related transfer functions (HRTFs) in communication with a simulator apparatus that simulates a human's upper body. The 3DSPA generates the binaural sound by processing the sound tracks with the HRTFs based on the user selections. | 07-17-2014 |
| 20140211951 | SOUND FIELD SPATIAL STABILIZER - In a system and method for maintaining the spatial stability of a sound field a balance gain may be calculated for two or more microphone signals. The balance gain may be associated with a spatial image in the sound field. Signal values may be calculated for each of the microphone. The signal values may be signal estimates or signal gains calculated to improve a characteristic of the microphone signals. The differences between the signal values associated with each microphone signal may be limited although some difference between signal values may be allowable. One or more microphone signals are adjusted responsive to the two or more balance gains and the signal gains to maintain the spatial stability of the sound field. The adjustments of one or more microphone signals may include mixing of two or more microphone. The signal gains are applied to the two or more microphone signals. | 07-31-2014 |
| 20140241529 | OBTAINING A SPATIAL AUDIO SIGNAL BASED ON MICROPHONE DISTANCES AND TIME DELAYS - Examples disclose a method to receive a first audio signal at a first microphone positioned at an actual distance from a second microphone. Additionally, the examples disclose the method is further to receive a second audio signal at the second microphone, the second audio signal is associated with an actual time delay relative to the first audio signal. Also, the examples disclose the method is also to determine a virtual time delay corresponding to a virtual distance that is different from the actual distance and to obtain a spatial audio signal based the distances and the time delays. | 08-28-2014 |
| 20140241530 | CONDENSER STEREOMICROPHONE - A condenser stereomicrophone includes a mid condenser microphone unit that is connected to left and right side condenser microphone units such that the output from the mid condenser microphone unit is applied to the left and right side condenser microphone units. The left and right side condenser microphone units are connected to left and right-channel connector terminals, respectively; and the left and right-channel connector terminals are connected to the mid condenser microphone unit via corresponding power-supply resistors. | 08-28-2014 |
| 20140286493 | METHOD AND APPARATUS FOR PROCESSING SIGNALS OF A SPHERICAL MICROPHONE ARRAY ON A RIGID SPHERE USED FOR GENERATING AN AMBISONICS REPRESENTATION OF THE SOUND FIELD - Spherical microphone arrays capture a three-dimensional sound field for generating an Ambisonics representation, where the pressure distribution on the surface of the sphere is sampled by the capsules of the array. The impact of the microphones on the captured sound field is removed using the inverse microphone transfer function. The equalisation of the transfer function of the microphone array is a big problem because the reciprocal of the transfer function causes high gains for small values in the transfer function and these small values are affected by transducer noise. The invention minimises that noise by using a Wiener filter processing in the frequency domain, which processing is automatically controlled per wave number by the signal-to-noise ratio of the microphone array. | 09-25-2014 |
| 20140355772 | ELECTRONIC DEVICE AND METHOD FOR SWITCHING RECORDING MODES - A method for switching recording modes using an electronic device requires a three-axis acceleration senor and at two microphones. The three-axis accelerometer is activated to detect three-axis acceleration values of the electronic device. A handheld direction of the electronic device is determined according to the detected three-axis acceleration values. The method set a recording software of the electronic device to select one of the recording modes to execute a recording function according to the determined handheld direction. The method further selects the first microphone and/or the second microphone to receive external audio signals according to the selected recording mode. | 12-04-2014 |
| 20140369507 | STEREO MICROPHONE - A stereo microphone includes two unidirective mid units and a bidirective side unit, the side unit is a ribbon microphone unit including a ribbon diaphragm, the two mid units are disposed at two respective surfaces of the ribbon diaphragm of the side unit, and the mid units each have a sound collecting axis along a longitudinal direction of the ribbon diaphragm in the side unit. | 12-18-2014 |
| 20150036830 | AUDIO PLAYBACK SYSTEM - An audio playback system includes a handheld device and a digital stereo set. By the handheld device, a control message is converted into a modulation signal. The modulation signal is transmitted to a speaker, thereby controlling the speaker to generate a modulated sound wave signal. After the modulated sound wave signal is received by a built-in microphone of the digital stereo set, the modulated sound wave signal is restored to the control message. After the control message is received by the digital stereo set, the digital stereo set performs a corresponding control action. | 02-05-2015 |
| 20150078555 | PORTABLE ELECTRONIC DEVICE WITH DIRECTIONAL MICROPHONES FOR STEREO RECORDING - The invention relates to a portable electronic device, comprising: at least two directional microphones for stereo sound pickup, each one of the two directional microphones defining a direct sound direction and an opposite sound direction towards which the directional microphones are directed; and a housing comprising for each of the directional microphones a first hole and a second hole, the first hole being located at a different side of the portable electronic device than the second hole. | 03-19-2015 |
| 20150098573 | ENHANCED SPATIALIZATION SYSTEM WITH SATELLITE DEVICE - A system enhances spatialization in which spatial information about sound sources at an originating location is represented in an audio signal. The system applies a phase difference analysis to the signals received from an array of spaced apart input devices or microphones to derive spatial or directional information about the relative directions of one or more satellite input devices or microphones. The signals from the satellite input devices or microphones are mixed by a function of their respective directions to generate a multichannel output signal. When processed by a remote or local system, the output signal provides a representation of the relative directions of the sound sources at the originating location at a receiving location. | 04-09-2015 |
| 20150110275 | Multi-Channel Audio Capture in an Apparatus with Changeable Microphone Configurations - An apparatus comprises at least one processor, and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to: provide an audio capture event wherein one or more microphone configurations are configured to provide one or more audio signals based on at least one acoustic signal from at least one acoustic source, at least one of the one or more microphone configurations being defined by a first position of a first microphone configuration on a first portion and a second position of a second microphone configuration on a second portion, the second portion being movable relative to the first portion. | 04-23-2015 |
| 20150131802 | STEREO MICROPHONE - A stereo microphone includes a nondirectional microphone unit and two bidirectional microphone units, the bidirectional microphone units having directional axes disposed on a single plane at predetermined angles to the center axis of the directionality of the stereo microphone, an acoustic terminal of the nondirectional microphone unit being disposed in the vicinity of acoustic terminals of the bidirectional microphone units. | 05-14-2015 |
| 20150317981 | Orientation Based Microphone Selection Apparatus - An apparatus comprising: an input configured to receive from at least two microphones at least two audio signals; at least two processor instances configured to generate separate output audio signal tracks from the at least two signals from the at least two microphones; a file processor configured to link the at least two output audio signal tracks within a file structure. | 11-05-2015 |
| 20150350787 | SYSTEM AND METHOD THEREOF FOR DETERMINING OF AN OPTIMAL DEPLOYMENT OF MICROPHONES TO ACHIEVE OPTIMAL COVERAGE IN A THREE-DIMENSIONAL SPACE - A system and method for determining an optimal arrangement of microphones for coverage of target sound sources are provided. The method includes receiving at least one geometric constraint respective of a three-dimensional microphone space, wherein the microphone space defines a location for possible deployment of a plurality of microphones; receiving information related to the sound sources, wherein sound sources include at least one target sound source; simulating sound distribution patterns from each of the least target sound sources and each microphone in the deployment of the plurality of microphones; selecting based, in part, on the simulated sound distribution patterns at least one contributing microphone from the deployment of the plurality of microphones; and outputting the optimal arrangement to include the least one contributing microphone. | 12-03-2015 |
| 20160007131 | Converting Multi-Microphone Captured Signals To Shifted Signals Useful For Binaural Signal Processing And Use Thereof - A method includes, estimating directional information based on multiple input channel signals representing at least one arriving sound from a sound source captured by respective multiple microphones that have respective known locations relative to each other, wherein said estimating comprises finding a time delay that removes a time difference between said first and second input channel signals; deriving a mid-signal and a side signal on a basis of a first input channel signal, a second input channel signal and said estimated directional information; and generating an output signal comprising a plurality of output channels using said mid-signal, said side signal and said estimated directional information such that the output signal retains a spatial representation of the captured at least one arriving sound. Apparatus and program products are also disclosed. | 01-07-2016 |
| 20160021478 | SOUND COLLECTION AND REPRODUCTION SYSTEM, SOUND COLLECTION AND REPRODUCTION APPARATUS, SOUND COLLECTION AND REPRODUCTION METHOD, SOUND COLLECTION AND REPRODUCTION PROGRAM, SOUND COLLECTION SYSTEM, AND REPRODUCTION SYSTEM - The sound collection and reproduction system reproduces comprise: a microphone array selection unit which selects a microphone arrays; an area sound collection unit which collects sounds of all areas by using the microphone arrays; an area sound selection unit which selects an area sound of an area corresponding to a specified listening position, and area sounds of surrounding areas of this area corresponding to a listening direction, in accordance with a sound reproduction environment; an area volume adjustment unit which adjusts a volume of each area sound unit in accordance with a distance from the specified listening position; and a stereophonic sound processing unit which performs a stereophonic sound process, for each area sound to which volume adjustment has been performed by the area volume adjustment unit, by using a transfer function corresponding to a sound reproduction environment. | 01-21-2016 |
| 20160037259 | STEREO BOUNDARY MICROPHONE AND STEREO BOUNDARY MICROPHONE ADAPTER - The stereo boundary microphone includes a boundary plate, a case body attached to the boundary plate and having an elongate shape including left and right grooves provided in opposite sides and extending along the longitudinal direction, first and second side walls covering the grooves included in the case body by predetermined distances to form left and right acoustic passages, and first and second microphones contained in tail end portions of the acoustic passages so as directional axes of the first and second microphones to be parallel. An opening communicating with the tail end portion of the case body is provided and services as a rear acoustic terminal to be used by both the first and second microphones. Front ends of the acoustic passages formed by the side walls serve as left and right front acoustic terminals of the first and second microphones. | 02-04-2016 |
| 20160044410 | Audio Apparatus - An apparatus comprising: an input configured to receive at least two groups of at least two audio signals; a first audio former configured to generate a first formed audio signal from a first of the at least two groups of at least two audio signals; a second audio former configured to generate a second formed audio signal from the second of the at least two groups of at least two audio signals; an audio analyser configured to analyse the first formed audio signal and the second formed audio signal to determine at least one audio source and an associated audio source signal; and an audio signal synthesiser configured to generate at least one output audio signal based on the at least one audio source and the associated audio source signal. | 02-11-2016 |
| 20160057539 | METHOD FOR RECORDING AND RECONSTRUCTING THREE-DIMENSIONAL SOUND FIELD - A method for recording and reconstructing a three-dimensional (3D) sound field, wherein a microphone array is established in a 3D sound field to track and locate sound sources in the 3D sound field and retrieve corresponding sound source signals. A plurality of control points is established inside an area where the 3D sound field is to be reconstructed. The control points are used to establish relational expressions of the sound source signals, the 3D sound field, a reconstructed sound field, and reconstructed sound source signals. The reconstructed sound source signals are obtained via solving the relational expressions and input into a speaker array arranged outside the area to establish the reconstructed sound field in the area. The present invention truly records the 3D sound field without using any extra transformation process and replays the reconstructed sound field with a larger sweet spot in higher fidelity. | 02-25-2016 |
| 20160066074 | STEREO MICROPHONE FOR MOBILE DEVICES - A stereo microphone for mobile devices, comprising a coupling body provided with elements for electromechanical connection to a mobile device and a supporting body for sound wave transducer means, which are integral therewith, the supporting body being pivoted to the coupling body by way of pivoting elements that allow its rotation about a single rotation axis for transition between a first shooting configuration, which corresponds to the use of the mobile device in portrait mode, and a second shooting configuration, which corresponds to the use of the mobile device in landscape mode. | 03-03-2016 |
| 20160066092 | Spatial Interference Suppression Using Dual-Microphone Arrays - Systems, processes, devices, apparatuses, algorithms and computer readable medium for suppressing spatial interference using a dual microphone array for receiving, from a first microphone and a second microphone that are separated by a predefined distance, and that are configured to receive source signals, respective first and second microphone signals based on received source signals. A phase difference between the first and the second microphone signals is calculated based on the predefined distance. An angular distance between directions of arrival of the source signals and a desired capture direction is calculated based on the phase difference. Directional-filter coefficients are calculated based on the angular distance. Undesired source signals are filtered from an output based on the directional-filter coefficients. | 03-03-2016 |
| 20160066117 | Sound Signal Processing Method and Apparatus - A sound signal processing method and apparatus are provided that relate to the audio signal processing field. The method in the present invention includes acquiring, by a mobile terminal, sound signals from a three-dimensional sound field, where at least three microphones are disposed on the mobile terminal and one microphone is configured to receive a sound signal in at least one direction; acquiring, according to the acquired sound signals, a direction of a sound source relative to the mobile terminal; and obtaining spatial audio signals according to the direction of the sound source relative to the mobile terminal and the acquired sound signals, where the spatial audio signals are used for simulating the three-dimensional sound field. The present invention is applicable to a process of collecting and processing signals in a three-dimensional sound field surrounding a terminal. | 03-03-2016 |
| 20160073198 | SPATIAL AUDIO APPARATUS - An apparatus comprising: an input configured to receive at least two audio signals; a frequency domain transformer configured to transform the at least two audio signals into a frequency domain representation of the at least two signals; a spatial covariance processor configured to generate an observed spatial covariance matrix from the frequency domain representations of the at least two audio signals; a beamformer configured to generate a spatial covariance matrix model comprising at least one beamformer kernel; a matrix factorizer configured to generate a linear magnitude mode! of audio objects; to combine the spatial covariance matrix model and the linear magnitude model; and further configured to determine at least one combination parameter, such that the at least one parameter for the combination attempts to optimise the combination; and a separator configured to cluster the audio objects based on the at least one combination parameter to create separated audio sources. | 03-10-2016 |
| 20160073199 | POLYHEDRAL AUDIO SYSTEM BASED ON AT LEAST SECOND-ORDER EIGENBEAMS - A microphone array-based audio system that supports representations of auditory scenes using second-order (or higher) harmonic expansions based on the audio signals generated by the microphone array. In one embodiment, a plurality of audio sensors are mounted on the surface of an acoustically rigid polyhedron that approximates a sphere. The number and location of the audio sensors on the polyhedron are designed to enable the audio signals generated by those sensors to be decomposed into a set of eigenbeams having at least one eigenbeam of order two (or higher). Beamforming (e.g., steering, weighting, and summing) can then be applied to the resulting eigenbeam outputs to generate one or more channels of audio signals that can be utilized to accurately render an auditory scene. | 03-10-2016 |
| 20160080867 | MICROPHONE ARRAY FOR ACOUSTIC SOURCE SEPARATION - A system for directionally selective sound reception comprises an array of pressure sensors ( | 03-17-2016 |
| 20160119734 | Mixing Desk, Sound Signal Generator, Method and Computer Program for Providing a Sound Signal - A mixing console ( | 04-28-2016 |
| 20160155453 | WIND NOISE REDUCTION | 06-02-2016 |
| 20160192073 | BINAURAL RECORDING FOR PROCESSING AUDIO SIGNALS TO ENABLE ALERTS - A wearable device for binaural audio is described. The wearable device includes a feedback mechanism, a microphone, an always on binaural recorder (AOBR), and a processor. The AOBR is to capture ambient noise via the microphone and interpret the ambient noise. An alert is issued by the processor to the feedback mechanism based on a notification detected via the microphone in the ambient noise. | 06-30-2016 |
| 20160192102 | SURROUND SOUND RECORDING ARRAY - Provided herein is a multichannel sound recording array having an elongated body and a plurality of arms provided at fixed angles relative to a center position of a recording field to enhance sound localization in a surround sound recording. | 06-30-2016 |
| 20160205453 | EXTERNAL SPEAKER/MICROPHONE APPARATUS FOR USE WITH AN ELECTRICAL DEVICE FOR PROVIDING AUDIO SIGNALS AND/OR FOR VOICE COMMUNICATION | 07-14-2016 |
| 20170236547 | PORTABLE RECORDER | 08-17-2017 |
| 20190149916 | AUDIO PROCESSING SYSTEM, AUDIO PROCESSING DEVICE, AND AUDIO PROCESSING METHOD | 05-16-2019 |
