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公开(公告)号：US20240313729A1
公开(公告)日：2024-09-19
申请号：US18672224
申请日：2024-05-23
IPC分类号： H03G3/30 , G10L21/038 , G10L25/21 , G10L25/51 , H03G1/00 , H03G7/00 , H03G9/00 , H04R3/00 , H04R3/04
CPC分类号： H03G3/3005 , G10L21/038 , G10L25/21 , G10L25/51 , H03G1/00 , H03G3/3089 , H03G7/007 , H03G9/005 , H04R3/00 , H04R3/04 , H04R2430/03
摘要： In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
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2.发明授权公开(公告)号：US12014116B2
公开(公告)日：2024-06-18
申请号：US18171534
申请日：2023-02-20
申请人： GoPro, Inc.
发明人： Erich Tisch , Joyce Rosenbaum , Magnus Hansson , Ke Li , David Wurtz
CPC分类号： G06F3/165 , H04R1/083 , H04R3/005 , H04R5/027 , H04R29/005 , G06V10/462 , H04R1/406 , H04R2410/01 , H04R2410/07 , H04R2430/03 , H04R2430/21 , H04R2499/11
摘要： An audio capture device selects between multiple microphones to generate an output audio signal depending on detected conditions. The audio capture device determines whether one or more microphones are wet or dry and selects one or more audio signals from the one or more microphones depending on their respective conditions. The audio capture device generates a mono audio output signal or a stereo output signal depending on the respective conditions of the one or more microphones.
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公开(公告)号：US20240137698A1
公开(公告)日：2024-04-25
申请号：US18376643
申请日：2023-10-03
发明人： Yuji SAITO
CPC分类号： H04R3/04 , H04R29/001 , H04R2430/01 , H04R2430/03
摘要： A controller calculates individual parameters, including nonlinear parameters of a speaker model, based on a measured displacement of a vibration system of a speaker. A sound generator outputs an audio signal, and an output flattening filter adjusts gains of individual bands of an audio signal so that a frequency characteristic of a volume of sound output by the speaker is flattened in accordance with a speaker model obtained by linearizing calculated parameters and outputs a resultant audio signal. A nonlinear inverse filter corrects the resultant audio signal by signal processing adapted to the gains of the output flattening filter so that the nonlinear distortion of the speaker is suppressed in accordance with the speaker model including the nonlinear parameters and outputs the corrected audio signal as an output audio signal to the speaker via an amplifier.
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公开(公告)号：US11962975B2
公开(公告)日：2024-04-16
申请号：US17342381
申请日：2021-06-08
发明人： Bingyan Yan , Fengyun Liao , Xin Qi
CPC分类号： H04R25/407 , H04R3/005 , H04R2430/03
摘要： The present application discloses an audio device that has an inhibitory effect on sound waves emitted by a near-field sound source within a specified range and has an amplification effect on sound waves emitted from a far-field sound source outside the specified range. The audio device includes a first sound wave sensor to receive a sound wave and output a first signal based on the sound wave; a second sound wave sensor to receive the sound wave and output a second signal based on the sound wave; and a signal processing circuit coupled to the first sound wave sensor and the second sound wave sensor to generate an output signal based on the first signal and the second signal, wherein the audio device's near-field sensitivity to a sound wave is substantially lower than its far-field sensitivity to the sound wave.
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公开(公告)号：US20240080608A1
公开(公告)日：2024-03-07
申请号：US18257862
申请日：2021-12-14
发明人： Yuanxing MA , Zhiwei SHUANG , Yang LIU
CPC分类号： H04R1/1083 , H04R5/04 , H04S7/301 , H04R2430/03 , H04R2499/11 , H04S2400/01 , H04S2400/15 , H04S2420/07
摘要： A method of audio processing includes capturing a binaural audio signal, calculating noise reduction gains using a machine learning model, and generating a modified binaural audio signal. The method may further including performing various corrections to the audio to account for video captured by different cameras such as a front camera and a rear camera. The method may further include performing smooth switching of the binaural audio when switching between the front camera and the rear camera. In this manner, noise may be reduced in the binaural audio, and the user perception of the combined video and binaural audio may be improved.
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公开(公告)号：US11888456B2
公开(公告)日：2024-01-30
申请号：US17191510
申请日：2021-03-03
申请人： GOOGLE LLC
IPC分类号： H03G5/16 , H04R1/40 , H04R3/12 , H04R3/00 , G06F3/16 , H04R3/04 , H04S7/00 , H04R29/00 , G06N3/04
CPC分类号： H03G5/165 , G06F3/167 , H04R1/403 , H04R1/406 , H04R3/005 , H04R3/04 , H04R3/12 , H04R29/001 , H04S7/301 , H04S7/305 , G06N3/04 , H04R2420/07 , H04R2430/03 , H04S2420/00
摘要： The various implementations described herein include methods, devices, and systems for automatic audio equalization. In one aspect, a method is performed at an electronic device that includes speakers, microphones, processors and memory. The electronic device outputs audio user content from the speakers and automatically equalizes subsequent audio output of the device without user input. The automatic equalization includes: (1) obtaining audio content signals, including receiving outputted audio content at each microphone; (2) determining from the audio content signals phase differences between microphones; (3) obtaining a feature vector based on the phase differences; (4) obtaining a frequency correction from a correction database based on the obtained feature vector; and (5) applying the obtained frequency correction to the subsequent audio output.
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公开(公告)号：US11838717B2
公开(公告)日：2023-12-05
申请号：US17369158
申请日：2021-07-07
发明人： Yasunobu Murata , Kohei Asada , Yushi Yamabe
IPC分类号： H04R1/10 , G10K11/178
CPC分类号： H04R1/1083 , G10K11/1783 , G10K11/17821 , G10K11/17823 , G10K11/17827 , G10K11/17854 , G10K11/17857 , G10K11/17873 , G10K11/17875 , G10K11/17885 , H04R1/1041 , G10K2210/1081 , G10K2210/3014 , G10K2210/3016 , H04R2430/03
摘要： Disclosed is a signal processing apparatus including a surrounding sound signal acquisition unit, a NC (Noise Canceling) signal generation part, a cooped-up feeling elimination signal generation part, and an addition part. The surrounding sound signal acquisition unit collects a surrounding sound to generate a surrounding sound signal. The NC signal generation part generates a noise canceling signal from the surrounding sound signal. The cooped-up feeling elimination signal generation part generates a cooped-up feeling elimination signal from the surrounding sound signal. The addition part adds together the generated noise canceling signal and the cooped-up feeling elimination signal at a prescribed ratio.
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公开(公告)号：US11792572B2
公开(公告)日：2023-10-17
申请号：US17568304
申请日：2022-01-04
发明人： Tien-Chiu Hung
CPC分类号： H04R3/04 , H03G3/3005 , H04R2430/01 , H04R2430/03
摘要： An audio signal processing circuit includes a filter, a gain control circuit, and a bass boost circuit. The filter filters an audio signal and produces a filtered signal accordingly. The gain control circuit divides the filtered signal in the time domain into a first segment and a second segment that are substantially equal in length, measures a first amplitude of the first segment and a second amplitude of the second segment, and generates a gain based on the first amplitude which is greater than the second amplitude. The bass boost circuit adjusts the amplitudes of the first segment and the second segment according to the gain.
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公开(公告)号：US20230273290A1
公开(公告)日：2023-08-31
申请号：US18313613
申请日：2023-05-08
摘要： An apparatus for generating at least one distance estimate to at least one sound source within a sound scene comprising the least one sound source, the apparatus configured to: receive at least two audio signals from a microphone array located within the sound scene; receive at least one further audio signal associated with the at least one sound source; determine at least one portion of the at least two audio signals from a microphone array corresponding to the at least one further audio signal associated with the at least one sound source; determine a distance estimate to the at least one sound source based on the at least one portion of the at least two audio signals from a microphone array corresponding to the at least one further audio signal associated with the at least one sound source.
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公开(公告)号：US11711060B2
公开(公告)日：2023-07-25
申请号：US17839099
申请日：2022-06-13
IPC分类号： H04R29/00 , H03G5/00 , H03G3/30 , H03G7/00 , H03G9/00 , H03G1/00 , H04R3/04 , G10L21/038 , G10L25/21 , G10L25/51 , H04R3/00
CPC分类号： H03G3/3005 , G10L21/038 , G10L25/21 , G10L25/51 , H03G1/00 , H03G3/3089 , H03G7/007 , H03G9/005 , H04R3/00 , H04R3/04 , H04R2430/03
摘要： In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
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