公开(公告)号：US20190066710A1

公开(公告)日：2019-02-28

申请号：US15688455

申请日：2017-08-28

Applicant: Apple Inc.

Inventor： Nicholas J. Bryan ,  Vasu Iyengar ,  Aram M. Lindahl

IPC: G10L21/02 ,  G10L15/22 ,  G10L21/0272 ,  G10L21/0232 ,  G10L15/30 ,  G10L25/51 ,  G10L21/0316

Abstract: A method for controlling a speech enhancement process in a far-end device, while engaged in a voice or video telephony communication session over a communication link with a near-end device. A near-end user speech signal is produced, using a microphone to pick up speech of a near-end user, and is analyzed by an automatic speech recognizer (ASR) without being triggered by an ASR trigger phrase or button. The recognized words are compared to a library of phrases to select a matching phrase, where each phrase is associated with a message that represents an audio signal processing operation. The message associated with the matching phrase is sent to the far-end device, which is used to configure the far-end device to adjust the speech enhancement process that produces the far-end speech signal. Other embodiments are also described.

公开(公告)号：US10269369B2

公开(公告)日：2019-04-23

申请号：US15610500

申请日：2017-05-31

Applicant: Apple Inc.

Inventor： Nicholas J. Bryan ,  Vasu Iyengar

IPC: H04R3/00 ,  G10L25/84 ,  G10L21/028 ,  G10L21/0208 ,  G10L21/0216 ,  G10L21/0232 ,  G10L21/0272

Abstract: System of noise reduction for mobile devices includes blind source separator (BSS) and noise suppressor. BSS receives signals from at least two audio pickup channels. BSS includes sound source separator, voice source detector, equalizer, and auto-disabler. Sound source separator generates signals representing first sound source and second sound source based on signals from the first and the second channels. Voice source detector determines whether the signals representing the first and second sound sources are voice signal or noise signal, respectively. Equalizer scales noise signal to match a level of the voice signal, and generates scaled noise signal. Auto-disabler determines whether to disable BSS. Auto-disabler outputs signals from the at least two audio pickup channels when the BSS is disabled and outputs the voice signal and the scaled noise signal when the BSS is not disabled. Noise suppressor generates clean signal based on outputs from auto-disabler. Other embodiments are also described.

公开(公告)号：US20180350381A1

公开(公告)日：2018-12-06

申请号：US15610500

申请日：2017-05-31

Applicant: Apple Inc.

Inventor： Nicholas J. Bryan ,  Vasu Iyengar

IPC: G10L21/0232 ,  G10L25/84 ,  G10L21/028 ,  H04R3/00 ,  G10L21/0272

CPC classification number: G10L21/0232 ,  G10L21/0272 ,  G10L21/028 ,  G10L25/84 ,  G10L2021/02082 ,  G10L2021/02166 ,  H04R3/005

Abstract: System of noise reduction for mobile devices includes blind source separator (BSS) and noise suppressor. BSS receives signals from at least two audio pickup channels. BSS includes sound source separator, voice source detector, equalizer, and auto-disabler. Sound source separator generates signals representing first sound source and second sound source based on signals from the first and the second channels. Voice source detector determines whether the signals representing the first and second sound sources are voice signal or noise signal, respectively. Equalizer scales noise signal to match a level of the voice signal, and generates scaled noise signal. Auto-disabler determines whether to disable BSS. Auto-disabler outputs signals from the at least two audio pickup channels when the BSS is disabled and outputs the voice signal and the scaled noise signal when the BSS is not disabled. Noise suppressor generates clean signal based on outputs from auto-disabler. Other embodiments are also described.

公开(公告)号：US11114109B2

公开(公告)日：2021-09-07

申请号：US16785480

申请日：2020-02-07

Applicant: Apple Inc.

Inventor： Nicholas J. Bryan ,  Qing Yang ,  Vasu Iyengar

IPC: G10L21/0216 ,  H04R3/00 ,  G10L21/0208

Abstract: A device implementing a system for mitigating noise includes at least one processor configured to receive a first audio signal corresponding to a first microphone, and determine whether wind noise is present based at least in part on the first audio signal. The processor is configured to select, based on the determining, a second audio signal from between second and third microphones. The second microphone is disposed at a location that experiences less echo coupling when the device is in a particular orientation with respect to a user. The third microphone is disposed at another location that experiences less wind noise. The processor is configured to determine voice and noise reference values based on the first and the selected second audio signals, and perform noise suppression with respect to at least one of the first or the selected second audio signal, based on the voice or the noise reference value.

公开(公告)号：US20190156847A1

公开(公告)日：2019-05-23

申请号：US16256587

申请日：2019-01-24

Applicant: Apple Inc.

Inventor： Nicholas J. Bryan ,  Vasu Iyengar ,  Aram M. Lindahl

IPC: G10L21/02 ,  G10L17/00 ,  G10L21/0232 ,  G10L21/028

CPC classification number: G10L21/0205 ,  G10L17/00 ,  G10L17/005 ,  G10L21/02 ,  G10L21/0208 ,  G10L21/0232 ,  G10L21/0272 ,  G10L21/028 ,  G10L2015/088 ,  G10L2021/02082 ,  H04M2201/40

Abstract: A method for controlling a speech enhancement process in a far-end device, while engaged in a voice or video telephony communication session over a communication link with a near-end device. A near-end user speech signal is produced, using a microphone to pick up speech of a near-end user, and is analyzed by an automatic speech recognizer (ASR) without being triggered by an ASR trigger phrase or button. The recognized words are compared to a library of phrases to select a matching phrase, where each phrase is associated with a message that represents an audio signal processing operation. The message associated with the matching phrase is sent to the far-end device, which is used to configure the far-end device to adjust the speech enhancement process that produces the far-end speech signal. Other embodiments are also described.

公开(公告)号：US10553235B2

公开(公告)日：2020-02-04

申请号：US16256587

申请日：2019-01-24

Applicant: Apple Inc.

Inventor： Nicholas J. Bryan ,  Vasu Iyengar ,  Aram M. Lindahl

IPC: G10L21/028 ,  G10L21/02 ,  G10L21/0232 ,  G10L17/00

Abstract: A method for controlling a speech enhancement process in a far-end device, while engaged in a voice or video telephony communication session over a communication link with a near-end device. A near-end user speech signal is produced, using a microphone to pick up speech of a near-end user, and is analyzed by an automatic speech recognizer (ASR) without being triggered by an ASR trigger phrase or button. The recognized words are compared to a library of phrases to select a matching phrase, where each phrase is associated with a message that represents an audio signal processing operation. The message associated with the matching phrase is sent to the far-end device, which is used to configure the far-end device to adjust the speech enhancement process that produces the far-end speech signal. Other embodiments are also described.

公开(公告)号：US10535362B2

公开(公告)日：2020-01-14

申请号：US15909513

申请日：2018-03-01

Applicant: Apple Inc.

Inventor： Nicholas J. Bryan ,  Vasu Iyengar

IPC: G10L21/0232 ,  G10L21/028 ,  H04R3/00 ,  G10L21/02 ,  G10L21/0216

Abstract: Signals are received from audio pickup channels that contain signals from multiple sound sources. The audio pickup channels may include one or more microphones and one or more accelerometers. Signals representative of multiple sound sources are generated using a blind source separation algorithm. It is then determined which of those signals is deemed to be a voice signal and which is deemed to be a noise signal. The output noise signal may be scaled to match a level of the output voice signal, and a clean speech signal is generated based on the output voice signal and the scaled noise signal. Other aspects are described.

公开(公告)号：US20190272842A1

公开(公告)日：2019-09-05

申请号：US15909513

申请日：2018-03-01

Applicant: Apple Inc.

Inventor： Nicholas J. Bryan ,  Vasu Iyengar

IPC: G10L21/0232 ,  G10L21/028 ,  G10L21/02 ,  H04R3/00

Abstract: Signals are received from audio pickup channels that contain signals from multiple sound sources. The audio pickup channels may include one or more microphones and one or more accelerometers. Signals representative of multiple sound sources are generated using a blind source separation algorithm. It is then determined which of those signals is deemed to be a voice signal and which is deemed to be a noise signal. The output noise signal may be scaled to match a level of the output voice signal, and a clean speech signal is generated based on the output voice signal and the scaled noise signal. Other aspects are described.