公开(公告)号：US08077873B2

公开(公告)日：2011-12-13

申请号：US12466282

申请日：2009-05-14

Applicant: Vasant Shridhar ,  Duane Wertz

Inventor： Vasant Shridhar ,  Duane Wertz

IPC: A61F11/06

CPC classification number: G10K11/178 ,  G10K2210/111 ,  G10K2210/1282 ,  G10K2210/3016

Abstract: An active noise control system generates an anti-noise signal to drive a first speaker group including at least one speaker to produce sound waves to destructively interfere with an undesired sound in at least one quiet zone. The active noise control system receives error signals representative of a combination of undesired sound and destructively interfering sound waves produced by the first speaker group. The active noise control system may select a second speaker group to replace the first speaker group based on the error signals.

Abstract translation: 有源噪声控制系统产生抗噪声信号以驱动包括至少一个扬声器的第一扬声器组以产生声波，以破坏性地干扰至少一个安静区域中的不期望的声音。 主动噪声控制系统接收代表由第一扬声器组产生的不期望的声音和相消干涉声波的组合的误差信号。 主动噪声控制系统可以基于误差信号选择第二扬声器组来替换第一扬声器组。

公开(公告)号：US20100266134A1

公开(公告)日：2010-10-21

申请号：US12425997

申请日：2009-04-17

Applicant: Duane Wertz ,  Vasant Shridhar

Inventor： Duane Wertz ,  Vasant Shridhar

IPC: G10K11/16

CPC classification number: G10K11/178 ,  G10K2210/3028 ,  G10K2210/3039 ,  G10K2210/3046 ,  G10K2210/503

Abstract: An active noise control (ANC) system includes at least one infinite impulse response filter (IIR). The IIR filter generates an output signal based on an input signal representative of an undesired sound. The ANC system generates an anti-noise signal based on the output signal of the IIR filter. The anti-noise signal is used to drive a speaker to generate sound waves to destructively interfere with the undesired sound. The ANC system includes an update system to generate update coefficients. The update system determines the stability of the update coefficients. Coefficients of the IIR filter are replaced with the update coefficients. The update system generates a set of update coefficients for each sample of the input signal.

Abstract translation: 主动噪声控制（ANC）系统包括至少一个无限脉冲响应滤波器（IIR）。 IIR滤波器基于表示不期望声音的输入信号产生输出信号。 ANC系统基于IIR滤波器的输出信号产生抗噪声信号。 抗噪声信号用于驱动扬声器产生声波以破坏性地干扰不期望的声音。 ANC系统包括生成更新系数的更新系统。 更新系统确定更新系数的稳定性。 IIR滤波器的系数由更新系数代替。 更新系统为输入信号的每个样本生成一组更新系数。

公开(公告)号：US08199924B2

公开(公告)日：2012-06-12

申请号：US12425997

申请日：2009-04-17

Applicant: Duane Wertz ,  Vasant Shridhar

Inventor： Duane Wertz ,  Vasant Shridhar

IPC: H03B29/00

CPC classification number: G10K11/178 ,  G10K2210/3028 ,  G10K2210/3039 ,  G10K2210/3046 ,  G10K2210/503

Abstract: An active noise control (ANC) system includes at least one infinite impulse response filter (IIR). The IIR filter generates an output signal based on an input signal representative of an undesired sound. The ANC system generates an anti-noise signal based on the output signal of the IIR filter. The anti-noise signal is used to drive a speaker to generate sound waves to destructively interfere with the undesired sound. The ANC system includes an update system to generate update coefficients. The update system determines the stability of the update coefficients. Coefficients of the IIR filter are replaced with the update coefficients. The update system generates a set of update coefficients for each sample of the input signal.

Abstract translation: 主动噪声控制（ANC）系统包括至少一个无限脉冲响应滤波器（IIR）。 IIR滤波器基于表示不期望声音的输入信号产生输出信号。 ANC系统基于IIR滤波器的输出信号产生抗噪声信号。 抗噪声信号用于驱动扬声器产生声波以破坏性地干扰不期望的声音。 ANC系统包括生成更新系数的更新系统。 更新系统确定更新系数的稳定性。 IIR滤波器的系数由更新系数代替。 更新系统为输入信号的每个样本生成一组更新系数。

公开(公告)号：US08135140B2

公开(公告)日：2012-03-13

申请号：US12275118

申请日：2008-11-20

Applicant: Vasant Shridhar ,  Duane Wertz

Inventor： Vasant Shridhar ,  Duane Wertz

IPC: G10K11/36

CPC classification number: G10K11/17827 ,  G10K11/17885 ,  G10K2210/128

Abstract: An active noise control system generates an anti-noise signal to drive a speaker to produce sound waves to destructively interfere with an undesired sound in a targeted space. The speaker is also driven to produce sound waves representative of a desired audio signal. Sound waves are detected in the target space and a representative signal is generated. The representative signal is combined with an audio compensation signal to remove a signal component representative of the sound waves based on the desired audio signal and generate an error signal. The active noise control adjusts the anti-noise signal based on the error signal. The active noise control system converts the sample rates of an input signal representative of the undesired sound, the desired audio signal, and the error signal. The active noise control system converts the sample rate of the anti-noise signal.

公开(公告)号：US20100177905A1

公开(公告)日：2010-07-15

申请号：US12352435

申请日：2009-01-12

Applicant: Vasant Shridhar ,  Duane Wertz

Inventor： Vasant Shridhar ,  Duane Wertz

IPC: G10K11/16

CPC classification number: G10K11/178

Abstract: An active noise control system includes a plurality of adaptive filters. The plurality of adaptive filters each receives an input signal representative of an undesired sound. The adaptive filters may each generate an output signal based on the input signal. The output signals are used to generate an anti-noise signal configured to drive a speaker to produce sound waves to destructively interfere with the undesired sound.

Abstract translation: 主动噪声控制系统包括多个自适应滤波器。 多个自适应滤波器各自接收表示不期望声音的输入信号。 自适应滤波器可以基于输入信号各自产生输出信号。 输出信号用于产生被配置为驱动扬声器产生声波以消除干扰不期望声音的抗噪声信号。

公开(公告)号：US08315404B2

公开(公告)日：2012-11-20

申请号：US13418095

申请日：2012-03-12

Applicant: Vasant Shridhar ,  Duane Wertz

Inventor： Vasant Shridhar ,  Duane Wertz

IPC: G10K11/36

CPC classification number: G10K11/17827 ,  G10K11/17885 ,  G10K2210/128

Abstract: An active noise control system generates an anti-noise signal to drive a speaker to produce sound waves to destructively interfere with an undesired sound in a targeted space. The speaker is also driven to produce sound waves representative of a desired audio signal. Sound waves are detected in the target space and a representative signal is generated. The representative signal is combined with an audio compensation signal to remove a signal component representative of the sound waves based on the desired audio signal and generate an error signal. The active noise control adjusts the anti-noise signal based on the error signal. The active noise control system converts the sample rates of an input signal representative of the undesired sound, the desired audio signal, and the error signal. The active noise control system converts the sample rate of the anti-noise signal.

Abstract translation: 主动噪声控制系统产生抗噪声信号以驱动扬声器产生声波以破坏性地干扰目标空间中的不期望的声音。 扬声器也被驱动以产生表示所需音频信号的声波。 在目标空间中检测声波，并产生代表信号。 代表信号与音频补偿信号组合，以基于期望的音频信号去除代表声波的信号分量，并产生误差信号。 有源噪声控制根据误差信号调整抗噪声信号。 主动噪声控制系统转换表示不期望声音，期望音频信号和误差信号的输入信号的采样率。 主动噪声控制系统转换抗噪声信号的采样率。

公开(公告)号：US08270626B2

公开(公告)日：2012-09-18

申请号：US13419420

申请日：2012-03-13

Applicant: Vasant Shridhar ,  Duane Wertz

Inventor： Vasant Shridhar ,  Duane Wertz

IPC: G10K11/36

CPC classification number: G10K11/17827 ,  G10K11/17885 ,  G10K2210/128

Abstract: An active noise control system generates an anti-noise signal to drive a speaker to produce sound waves to destructively interfere with an undesired sound in a targeted space. The speaker is also driven to produce sound waves representative of a desired audio signal. Sound waves are detected in the target space and a representative signal is generated. The representative signal is combined with an audio compensation signal to remove a signal component representative of the sound waves based on the desired audio signal and generate an error signal. The active noise control adjusts the anti-noise signal based on the error signal. The active noise control system converts the sample rates of an input signal representative of the undesired sound, the desired audio signal, and the error signal. The active noise control system converts the sample rate of the anti-noise signal.

公开(公告)号：US20120170764A1

公开(公告)日：2012-07-05

申请号：US13419420

申请日：2012-03-13

Applicant: Vasant Shridhar ,  Duane Wertz

Inventor： Vasant Shridhar ,  Duane Wertz

IPC: G10K11/16

CPC classification number: G10K11/17827 ,  G10K11/17885 ,  G10K2210/128

Abstract: An active noise control system generates an anti-noise signal to drive a speaker to produce sound waves to destructively interfere with an undesired sound in a targeted space. The speaker is also driven to produce sound waves representative of a desired audio signal. Sound waves are detected in the target space and a representative signal is generated. The representative signal is combined with an audio compensation signal to remove a signal component representative of the sound waves based on the desired audio signal and generate an error signal. The active noise control adjusts the anti-noise signal based on the error signal. The active noise control system converts the sample rates of an input signal representative of the undesired sound, the desired audio signal, and the error signal. The active noise control system converts the sample rate of the anti-noise signal.

Abstract translation: 主动噪声控制系统产生抗噪声信号以驱动扬声器产生声波以破坏性地干扰目标空间中的不期望的声音。 扬声器也被驱动以产生表示所需音频信号的声波。 在目标空间中检测声波，并产生代表信号。 代表信号与音频补偿信号组合，以基于期望的音频信号去除代表声波的信号分量，并产生误差信号。 有源噪声控制根据误差信号调整抗噪声信号。 主动噪声控制系统转换表示不期望声音，期望音频信号和误差信号的输入信号的采样率。 主动噪声控制系统转换抗噪声信号的采样率。

公开(公告)号：US08718289B2

公开(公告)日：2014-05-06

申请号：US12352435

申请日：2009-01-12

Applicant: Vasant Shridhar ,  Duane Wertz

Inventor： Vasant Shridhar ,  Duane Wertz

IPC: A61F11/06 ,  G10K11/16 ,  H03B29/00

CPC classification number: G10K11/178

Abstract: An active noise control system includes a plurality of adaptive filters. The plurality of adaptive filters each receives an input signal representative of an undesired sound. The adaptive filters may each generate an output signal based on the input signal. The output signals are used to generate an anti-noise signal configured to drive a speaker to produce sound waves to destructively interfere with the undesired sound.

Abstract translation: 主动噪声控制系统包括多个自适应滤波器。 多个自适应滤波器各自接收表示不期望声音的输入信号。 自适应滤波器可以基于输入信号各自产生输出信号。 输出信号用于产生被配置为驱动扬声器产生声波以消除干扰不期望声音的抗噪声信号。

公开(公告)号：US20120170763A1

公开(公告)日：2012-07-05

申请号：US13418095

申请日：2012-03-12

Applicant: Vasant Shridhar ,  Duane Wertz

Inventor： Vasant Shridhar ,  Duane Wertz

IPC: G10K11/16

CPC classification number: G10K11/17827 ,  G10K11/17885 ,  G10K2210/128

Abstract: An active noise control system generates an anti-noise signal to drive a speaker to produce sound waves to destructively interfere with an undesired sound in a targeted space. The speaker is also driven to produce sound waves representative of a desired audio signal. Sound waves are detected in the target space and a representative signal is generated. The representative signal is combined with an audio compensation signal to remove a signal component representative of the sound waves based on the desired audio signal and generate an error signal. The active noise control adjusts the anti-noise signal based on the error signal. The active noise control system converts the sample rates of an input signal representative of the undesired sound, the desired audio signal, and the error signal. The active noise control system converts the sample rate of the anti-noise signal.