Patent application number | Description | Published |
20080298610 | Parameter Space Re-Panning for Spatial Audio - Aspects of the invention provide methods, computer-readable media, and apparatuses for re-panning multiple audio signals by applying spatial cue coding. Sound sources in each of the signals may be re-panned before the signals are mixed to a combined signal. Processing may be applied in a conference bridge that receives two omni-directionally recorded audio signals. The conference bridge subsequently re-pans one of the signals to the listeners left side and the signal to the right side. The source image mapping and panning may further be adaptively based on the content and use case. Mapping may be done by manipulating the directional parameters prior to directional decoding or before directional mixing. Directional information that is associated with an audio input signal is remapped order to compress input source positions into virtual source positions. The virtual sources may be placed with respect to actual loudspeakers using binaural cue panning. | 12-04-2008 |
20090116652 | Focusing on a Portion of an Audio Scene for an Audio Signal - Aspects of the invention provide methods, computer-readable media, and apparatuses for spatially manipulating sound that is played back to a listener over a set of output transducers, e.g., headphones. The listener can direct spatial attention to focus on a portion of an audio scene, analogous to a magnifying glass being used to pick out details in a picture. An input multi-channel audio signal that is generated by audio sources is obtained, and directional information is determined for each of the audio sources. The user provides a desired direction of spatial attention so that audio processing can focus on the desired direction and render a corresponding multi-channel audio signal to the user. A region of an audio scene is expanded around the desired direction while the audio scene is compressed in another portion of the audio scene. | 05-07-2009 |
20120076305 | Spatial Audio Mixing Arrangement - A method comprising: receiving a plurality of audio input signals in a mixer apparatus; selecting a predetermined number of active audio input signals to be used as the basis for room effect signal generation; applying the predetermined number of dedicated room effect processing units based at least partly on the selected predetermined number of audio input signals; creating a set of spatialized signals for a plurality of audio output signals; and creating the plurality of audio output signals by combining, for each output signal m, spatialized signals created for the output signal m and room effect signals from all room effect processing units. | 03-29-2012 |
20120101610 | Positional Disambiguation in Spatial Audio - A method including: obtaining phase information dependent upon a time-varying phase difference between captured audio channels; obtaining sampling information relating to time-varying spatial sampling of the captured audio channels; and processing the phase information and the sampling information to determine audio control information for controlling spatial rendering of the captured audio channels. | 04-26-2012 |
20120170760 | Audio Processing - A method including: determining a time difference between at least a first audio channel and a second audio channel of the same acoustic space; and enabling a corrective time shift between the first audio channel and the second audio channel when the time difference exceeds a threshold. | 07-05-2012 |
20120288126 | Apparatus - An apparatus comprising 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 at least to perform processing at least one control parameter dependent on at least one sensor input parameter, processing at least one audio signal dependent on the processed at least one control parameter, and outputting the processed at least one audio signal. | 11-15-2012 |
20130003998 | Modifying Spatial Image of a Plurality of Audio Signals - A method comprising: modifying a sound stage produced by an input audio signal comprising two or more audio channels such that spatial room is relieved for one or more additional sound sources; and inserting said one or more additional sound sources in the relieved spatial room of the modified sound stage of the input audio signal without introducing spatial interference with the modified sound stage of the input audio signal. | 01-03-2013 |
20140029761 | Method and Apparatus for Microphone Beamforming - In accordance with an example embodiment of the present invention, an apparatus is disclosed. The apparatus includes a camera system and an optimization system. The optimization system is configured to communicate with the camera system. At least one microphone is connected to the optimization system. The optimization system is configured to adjust a beamform of the at least one microphone based, at least in part, on camera focus information of the camera system. | 01-30-2014 |
20140242959 | METHOD AND APPARATUS FOR VOICE CONFERENCING - A method, apparatus computer program product provide acoustical echo control for distributed voice conferencing including distributed voice conferencing that utilizes spatial audio processing. In the context of a method, a reference signal and one or more other reference signals may be received by a mobile terminal. The reference signal is associated with downlink audio to be reproduced by the mobile terminal and the one or more other reference signals are associated with downlink audio to be reproduced by one or more other mobile terminals. The method also includes processing an echo signal from uplink audio due to the downlink audio reproduced by the audio transducer of the mobile terminal based upon the reference signal. The method also processes an echo signal from uplink audio due to the downlink audio reproduced by respective audio transducers of the one or more other mobile terminals based upon the one or more other reference signals. | 08-28-2014 |
20140328502 | Audio Apparatus - An apparatus including an input configured to receive at least one first audio signal from a first apparatus; an input configured to receive at least one second audio signal from a second apparatus; a distance detector configured to determine a distance between the first and the second apparatus; and a level control generator configured to generate a level control for mixing the at least one first audio signal and the at least one second audio signal based on the distance between the first and the second apparatus. | 11-06-2014 |
20140329511 | AUDIO CONFERENCING - The invention relates to audio conferencing. Audio signals are received and transformed to a spectrum, and then modified by mel-frequency scaling and logarithmic scaling before a second-order transform. The obtained coefficients can be further processed before carrying out the similarity comparison between signals. Voice activity detection and other information like mute signalling can be used in the formation of the similarity information. The resulting similarity information can be used to form groups, and the resulting groups can be analyzed topologically. The similarity information can then be used to form a control signal for audio conferencing, e.g. to control an audio conference so that a signal of a co-located audio source is removed. | 11-06-2014 |