公开(公告)号：US09257132B2

公开(公告)日：2016-02-09

申请号：US14320723

申请日：2014-07-01

Applicant: Texas Instruments Incorporated

Inventor： Baboo Vikrhamsingh Gowreesunker ,  Nitish Krishna Murthy ,  Edwin Randolph Cole

IPC: G10L21/02 ,  G10L15/20 ,  G10L21/0208 ,  H04R3/00 ,  G10L21/0216 ,  G10L21/0232 ,  H04R1/40

CPC classification number: G10L21/0208 ,  G10L21/0232 ,  G10L2021/02166 ,  H04R1/406 ,  H04R3/005 ,  H04R2410/05 ,  H04R2430/03 ,  H04R2499/11

Abstract: A method of dominant speech extraction is provided that includes acquiring a primary audio signal from a microphone and at least one additional audio signal from at least one additional microphone, wherein the acquired audio signals include speech and noise, decomposing each acquired audio signal into a low frequency sub-band signal and a high frequency sub-band signal, applying speech suppression beamforming to the low frequency sub-band signals to generate a reference channel having an estimate of noise in the low frequency sub-band signals, applying noise cancellation to the low frequency sub-band signal of the primary audio signal using the reference channel to generate a first signal having a low frequency estimate of the speech, applying noise suppression beamforming to the high frequency sub-band signals to generate a second signal having a high frequency estimate of the speech, and combining the first and second signals to generate a full-band audio signal.

Abstract translation: 提供了一种主要语音提取的方法，其包括从麦克风获取主音频信号和来自至少一个附加麦克风的至少一个附加音频信号，其中所获取的音频信号包括语音和噪声，将每个获取的音频信号分解为低 频率子带信号和高频子带信号，对低频子带信号应用语音抑制波束形成，以产生具有低频子带信号中的噪声估计的参考信道，将噪声消除应用于 使用所述参考信道的所述主音频信号的低频子带信号，以产生具有所述语音的低频估计的第一信号，对所述高频子带信号应用噪声抑制波束形成以产生具有高频率的第二信号 语音的估计，以及组合第一和第二信号以产生全频带音频信号。

公开(公告)号：US20140112491A1

公开(公告)日：2014-04-24

申请号：US13655060

申请日：2012-10-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Nitish Krishna Murthy ,  Supriyo Palit ,  Edwin Randolph Cole ,  Jorge Francisco Arbona Miskimen

IPC: G10K11/16

CPC classification number: G10K11/178 ,  G10K11/1785 ,  G10K11/17885 ,  G10K2210/1081 ,  G10K2210/3028 ,  G10K2210/3033 ,  G10K2210/3214

Abstract: A method and apparatus for active noise canceling. The method includes retrieving an input sample from at least one of a feedback or feedforward microphone digitized through the sigma-delta converter, retrieving the input sample and a related filter, wherein the filter is customized to the particular headset, outputting a filtered signal through a speaker without any interpolation and reducing order of CIC filters, and outputting a response sharply tapered down.

Abstract translation: 一种主动噪声消除的方法和装置。 该方法包括从通过Σ-Δ转换器数字化的反馈或前馈麦克风中的至少一个麦克风检索输入样本，检索输入样本和相关滤波器，其中滤波器被定制到特定耳机，通过一个滤波器输​​出滤波信号 扬声器没有任何内插和减少CIC滤波器的顺序，并且输出响应急剧下降。

公开(公告)号：US20150248879A1

公开(公告)日：2015-09-03

申请号：US14193974

申请日：2014-02-28

Applicant: Texas Instruments Incorporated

Inventor： Jorge Francisco Arbona Miskimen ,  Nitish Krishna Murthy ,  Srivatsan Agaram Kandadai ,  Matthew Raymond Kucic ,  Edwin Randolph Cole

IPC: G10K11/178

CPC classification number: G10K11/178 ,  G10K11/1781 ,  G10K11/1787 ,  G10K2210/1081 ,  G10K2210/3016 ,  G10K2210/3033

Abstract: An active noise cancellation (“ANC”) unit receives audio signals from a user-operated device through a connection. In response to the audio signals, the ANC unit causes at least one speaker to generate sound waves. The ANC unit receives a set of parameters from the user-operated device through the connection. The connection is at least one of: an audio cable; and a wireless connection. The set of parameters represents a user-specified combination of ANC properties. The ANC unit automatically adapts itself to implement the set of parameters for substantially achieving the user-specified combination of ANC properties in operations of the ANC unit.

Abstract translation: 主动噪声消除（“ANC”）单元通过连接从用户操作的设备接收音频信号。 响应于音频信号，ANC单元使至少一个扬声器产生声波。 ANC单元通过连接从用户操作的设备接收一组参数。 连接至少是以下之一：音频线; 和无线连接。 参数集表示用户指定的ANC属性组合。 ANC单元自动适应实现一组参数，以在ANC单元的操作中基本上实现用户指定的ANC属性的组合。

公开(公告)号：US20150040671A1

公开(公告)日：2015-02-12

申请号：US14458036

申请日：2014-08-12

Applicant: Texas Instruments Incorporated

Inventor： Rakesh Malladi ,  Anand G. Dabak ,  Nitish Krishna Murthy

IPC: G01N29/04

CPC classification number: G01N29/041 ,  G01N2291/02854

Abstract: A method includes: transmitting, via a signal generator, an electrical driving signal, the electrical driving signal having a mean square error; transmitting, via a wave generating component, a Lamb wave, the Lamb wave having many different modes; estimating, via an estimating component, a propagation parameter associated with the Lamb wave; and estimating, via an estimating component, a thickness of a material.

Abstract translation: 一种方法包括：经由信号发生器发送电驱动信号，电驱动信号具有均方误差; 经由波产生部件发射兰姆波，具有许多不同模式的兰姆波; 经由估计组件估计与兰姆波相关联的传播参数; 以及经由估计组件估计材料的厚度。

公开(公告)号：US20150025878A1

公开(公告)日：2015-01-22

申请号：US14320723

申请日：2014-07-01

Applicant: Texas Instruments Incorporated

Inventor： Baboo Vikrhamsingh Gowreesunker ,  Nitish Krishna Murthy ,  Edwin Randolph Cole

IPC: G10L21/0208

CPC classification number: G10L21/0208 ,  G10L21/0232 ,  G10L2021/02166 ,  H04R1/406 ,  H04R3/005 ,  H04R2410/05 ,  H04R2430/03 ,  H04R2499/11

Abstract: A method of dominant speech extraction is provided that includes acquiring a primary audio signal from a microphone and at least one additional audio signal from at least one additional microphone, wherein the acquired audio signals include speech and noise, decomposing each acquired audio signal into a low frequency sub-band signal and a high frequency sub-band signal, applying speech suppression beamforming to the low frequency sub-band signals to generate a reference channel having an estimate of noise in the low frequency sub-band signals, applying noise cancellation to the low frequency sub-band signal of the primary audio signal using the reference channel to generate a first signal having a low frequency estimate of the speech, applying noise suppression beamforming to the high frequency sub-band signals to generate a second signal having a high frequency estimate of the speech, and combining the first and second signals to generate a full-band audio signal.

Abstract translation: 提供了一种主要语音提取的方法，其包括从麦克风获取主音频信号和来自至少一个附加麦克风的至少一个附加音频信号，其中所获取的音频信号包括语音和噪声，将每个获取的音频信号分解为低 频率子带信号和高频子带信号，对低频子带信号应用语音抑制波束形成，以产生具有低频子带信号中的噪声估计的参考信道，将噪声消除应用于 使用所述参考信道的所述主音频信号的低频子带信号，以产生具有所述语音的低频估计的第一信号，对所述高频子带信号应用噪声抑制波束形成以产生具有高频率的第二信号 语音的估计，以及组合第一和第二信号以产生全频带音频信号。

公开(公告)号：US09518959B2

公开(公告)日：2016-12-13

申请号：US14458036

申请日：2014-08-12

Applicant: Texas Instruments Incorporated

Inventor： Rakesh Malladi ,  Anand G. Dabak ,  Nitish Krishna Murthy

IPC: G01N29/04

CPC classification number: G01N29/041 ,  G01N2291/02854

Abstract: A method includes: transmitting, via a signal generator, an electrical driving signal, the electrical driving signal having a mean square error; transmitting, via a wave generating component, a Lamb wave, the Lamb wave having many different modes; estimating, via an estimating component, a propagation parameter associated with the Lamb wave; and estimating, via an estimating component, a thickness of a material.

Abstract translation: 一种方法包括：经由信号发生器发送电驱动信号，电驱动信号具有均方误差; 经由波产生部件发射兰姆波，具有许多不同模式的兰姆波; 经由估计组件估计与兰姆波相关联的传播参数; 以及经由估计组件估计材料的厚度。

公开(公告)号：US09368096B2

公开(公告)日：2016-06-14

申请号：US13722040

申请日：2012-12-20

Applicant: Texas Instruments Incorporated

Inventor： Nitish Krishna Murthy ,  Edwin Randolph Cole

IPC: G10K11/00 ,  G10K11/178

CPC classification number: G10K11/002 ,  G10K11/178 ,  G10K2210/12 ,  G10K2210/1281 ,  G10K2210/1282 ,  G10K2210/30351

Abstract: Microphone signals are received from a microphone. The microphone signals represent first sound waves. A determination is made about a type of noise that likely exists in the first sound waves. In response to the type of noise, cancellation signals are generated by filtering the microphone signals with at least one of: a first filter in response to the type of noise indicating that a first type of noise likely exists in the first sound waves; and a second filter in response to the type of noise indicating that a second type of noise likely exists in the first sound waves. In response to the cancellation signals, second sound waves are output from a speaker for cancelling at least some noise in the first sound waves.

Abstract translation: 从麦克风接收麦克风信号。 麦克风信号表示第一声波。 确定可能存在于第一声波中的噪声类型。 响应于噪声类型，通过用以下至少之一对麦克风信号进行滤波来产生消除信号：第一滤波器响应于指示第一类噪声可能存在于第一声波中的噪声类型; 以及响应于指示在第一声波中可能存在第二类型的噪声的噪声类型的第二滤波器。 响应于取消信号，从扬声器输出第二声波以抵消第一声波中的至少一些噪声。

公开(公告)号：US09082392B2

公开(公告)日：2015-07-14

申请号：US13655060

申请日：2012-10-18

Applicant: Texas Instruments Incorporated

Inventor： Nitish Krishna Murthy ,  Supriyo Palit ,  Edwin Randolph Cole ,  Jorge Francisco Arbona Miskimen

IPC: G10K11/178

CPC classification number: G10K11/178 ,  G10K11/1785 ,  G10K11/17885 ,  G10K2210/1081 ,  G10K2210/3028 ,  G10K2210/3033 ,  G10K2210/3214

Abstract: A method and apparatus for active noise canceling. The method includes retrieving an input sample from at least one of a feedback or feedforward microphone digitized through the sigma-delta converter, retrieving the input sample and a related filter, wherein the filter is customized to the particular headset, outputting a filtered signal through a speaker without any interpolation and reducing order of CIC filters, and outputting a response sharply tapered down.

Abstract translation: 一种主动噪声消除的方法和装置。 该方法包括从通过Σ-Δ转换器数字化的反馈或前馈麦克风中的至少一个麦克风检索输入样本，检索输入样本和相关滤波器，其中滤波器被定制到特定耳机，通过一个滤波器输​​出滤波信号 扬声器没有任何内插和减少CIC滤波器的顺序，并且输出响应急剧下降。

公开(公告)号：US20130156214A1

公开(公告)日：2013-06-20

申请号：US13722040

申请日：2012-12-20

Applicant: Texas Instruments Incorporated

Inventor： Nitish Krishna Murthy ,  Edwin Randolph Cole

IPC: G10K11/00

CPC classification number: G10K11/002 ,  G10K11/178 ,  G10K2210/12 ,  G10K2210/1281 ,  G10K2210/1282 ,  G10K2210/30351

Abstract: Microphone signals are received from a microphone. The microphone signals represent first sound waves. A determination is made about a type of noise that likely exists in the first sound waves. In response to the type of noise, cancellation signals are generated by filtering the microphone signals with at least one of: a first filter in response to the type of noise indicating that a first type of noise likely exists in the first sound waves; and a second filter in response to the type of noise indicating that a second type of noise likely exists in the first sound waves. In response to the cancellation signals, second sound waves are output from a speaker for cancelling at least some noise in the first sound waves.

Abstract translation: 从麦克风接收麦克风信号。 麦克风信号表示第一声波。 确定可能存在于第一声波中的噪声类型。 响应于噪声类型，通过用以下至少之一对麦克风信号进行滤波来产生消除信号：第一滤波器响应于指示第一类噪声可能存在于第一声波中的噪声类型; 以及响应于指示在第一声波中可能存在第二类型的噪声的噪声类型的第二滤波器。 响应于取消信号，从扬声器输出第二声波以抵消第一声波中的至少一些噪声。