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公开(公告)号：US20250095625A1
公开(公告)日：2025-03-20
申请号：US18468160
申请日：2023-09-15
Applicant: GM Global Technology Operations LLC
Inventor： Amos Schreibman , Elior Hadad , Eli Tzirkel-Hancock
IPC: G10K11/175 , G10K11/178
Abstract: A computer-implemented method executed by data processing hardware causes the data processing hardware to perform operations that include receiving multiple audio signals from a sensor array. The multiple audio signals include a target audio signal and interference audio signals. The data processing hardware then identifies a design constraint based on the multiple audio signals. The desired constraint includes a pass constraint corresponding to the target audio signal and a null constraint corresponding to the interference audio signals. The data processing hardware then compares a design filter weight of the design constraint with a filter weight maximum, designs an audio filter using the desired constraint, and filters the multiple audio signals using the designed audio filter.
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公开(公告)号：US11700486B2
公开(公告)日：2023-07-11
申请号：US17394237
申请日：2021-08-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Amos Schreibman
IPC: H04R3/02 , G10L21/0232 , G10L21/0216 , G10L21/0208
CPC classification number: H04R3/02 , G10L21/0232 , G10L2021/02082 , G10L2021/02163
Abstract: An audio system includes: a speaker; a microphone that generates a microphone signal based on sound output from the speaker; a mixer module configured to generate a mixed signal by mixing the microphone signal with an audio signal; a filter module configured to filter the mixed signal to produce a filtered signal and to apply the filtered signal to the speaker; and a detector module configured to determine a howling frequency in the microphone signal attributable to sound output from the speaker, where the filter module is configured to decrease a magnitude of the filtered signal at the howling frequency.
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公开(公告)号：US20220303677A1
公开(公告)日：2022-09-22
申请号：US17203905
申请日：2021-03-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Amos Schreibman , Anna Barnov
Abstract: The present application relates to a system and method for receiving, via a microphone array, an incoming acoustic signal including a desired signal and an undesired signal, performing a first minimum variance distortionless response beamforming operation on the incoming acoustic signal to isolate the desired signal, performing a second minimum variance distortionless response beamforming operation, by the signal processor, on the incoming acoust signal to isolate the undesired signal, filtering the desired signal to generate a filtered desired signal, combining an inverse of the filtered desired signal with the undesired signal to generate a combined undesired signal, filtering the combined undesired signal to generate a filtered combined undesired signal, combining an inverse of the combined undesired signal and the desired signal to generate an output signal, and generating a data signal in response to the output signal for transmission via a wireless network.
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Patent Agency Ranking
公开(公告)号：US20230245673A1
公开(公告)日：2023-08-03
申请号：US17591696
申请日：2022-02-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Amos Schreibman
IPC: G10L25/30 , G10L21/0264 , G10L25/06 , G10L19/12
CPC classification number: G10L25/30 , G10L21/0264 , G10L25/06 , G10L19/12 , G10L2021/02163
Abstract: A system and method for processing an audio input signal includes a microphone, a controller, and a communication link that may be coupled to a remote speaker. The microphone captures the audio input signal and communicates the audio input signal to the controller, and the controller is coupled to the communication link. The controller includes executable code to generate, via a linear noise reduction filtering algorithm, a first resultant based upon the audio input signal, and generate, via non-linear post filtering algorithm, a second resultant based upon the first resultant. An audio output signal is generated based upon the second resultant employing a feature restoration algorithm. The audio output signal is communicated, via the communication link, to a speaker that may be at a remote location.
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公开(公告)号：US11438695B1
公开(公告)日：2022-09-06
申请号：US17203905
申请日：2021-03-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Amos Schreibman , Anna Barnov
Abstract: The present application relates to a system and method for receiving, via a microphone array, an incoming acoustic signal including a desired signal and an undesired signal, performing a first minimum variance distortionless response beamforming operation on the incoming acoustic signal to isolate the desired signal, performing a second minimum variance distortionless response beamforming operation, by the signal processor, on the incoming acoust signal to isolate the undesired signal, filtering the desired signal to generate a filtered desired signal, combining an inverse of the filtered desired signal with the undesired signal to generate a combined undesired signal, filtering the combined undesired signal to generate a filtered combined undesired signal, combining an inverse of the combined undesired signal and the desired signal to generate an output signal, and generating a data signal in response to the output signal for transmission via a wireless network.
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公开(公告)号：US20220103938A1
公开(公告)日：2022-03-31
申请号：US17034846
申请日：2020-09-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Amos Schreibman
IPC: H04R3/02 , G10L21/0232
Abstract: The present application relates to a system and method for providing autoregressive based residual echo suppression in the STFT domain in a bidirectional vehicle communications system including receiving, from a communications processor, a speaker signal for coupling to a speaker, receiving, from a microphone, a microphone signal wherein the microphone signal includes a voice signal and a residual echo signal, transforming the signals to the STFT domain generating an estimated power spectral density of the residual echo signal in response to a prior power spectral density of a prior residual echo signal, isolating the voice signal from the microphone signal by multiplying the estimated residual echo gain generated using the estimated power spectral density of the residual echo signal with the microphone signal, transforming the signals back to the time domain and coupling the voice signal to the communications processor.
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公开(公告)号：US11823703B2
公开(公告)日：2023-11-21
申请号：US17591696
申请日：2022-02-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Amos Schreibman
IPC: G10L25/30 , G10L21/0264 , G10L19/12 , G10L25/06 , G10L21/0216
CPC classification number: G10L25/30 , G10L19/12 , G10L21/0264 , G10L25/06 , G10L2021/02163
Abstract: A system and method for processing an audio input signal includes a microphone, a controller, and a communication link that may be coupled to a remote speaker. The microphone captures the audio input signal and communicates the audio input signal to the controller, and the controller is coupled to the communication link. The controller includes executable code to generate, via a linear noise reduction filtering algorithm, a first resultant based upon the audio input signal, and generate, via non-linear post filtering algorithm, a second resultant based upon the first resultant. An audio output signal is generated based upon the second resultant employing a feature restoration algorithm. The audio output signal is communicated, via the communication link, to a speaker that may be at a remote location.
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公开(公告)号：US11553274B2
公开(公告)日：2023-01-10
申请号：US17034846
申请日：2020-09-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Amos Schreibman
IPC: H04R3/02 , G10L21/0232 , G10L21/0216 , G10L21/0208
Abstract: The present application relates to a system and method for providing autoregressive based residual echo suppression in the STFT domain in a bidirectional vehicle communications system including receiving, from a communications processor, a speaker signal for coupling to a speaker, receiving, from a microphone, a microphone signal wherein the microphone signal includes a voice signal and a residual echo signal, transforming the signals to the STFT domain generating an estimated power spectral density of the residual echo signal in response to a prior power spectral density of a prior residual echo signal, isolating the voice signal from the microphone signal by multiplying the estimated residual echo gain generated using the estimated power spectral density of the residual echo signal with the microphone signal, transforming the signals back to the time domain and coupling the voice signal to the communications processor.
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