知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

14 records (took 0.038 seconds)

    ADAPTIVE NOISE CANCELING ARCHITECTURE FOR A PERSONAL AUDIO DEVICE
    2.
    发明申请
    ADAPTIVE NOISE CANCELING ARCHITECTURE FOR A PERSONAL AUDIO DEVICE 有权
    适应噪音取消个人音乐设备的架构

    公开(公告)号：US20160232887A1

    公开(公告)日：2016-08-11

    申请号：US15130271

    申请日：2016-04-15

    Applicant: Cirrus Logic, Inc.

    Inventor： Jon D. Hendrix ,  Gautham Devendra Kamath ,  Nitin Kwatra ,  Ali Abdollahzadeh Milani ,  Jeffrey Alderson

    IPC: G10K11/178

    CPC classification number: G10K11/178 ,  G10K11/17827 ,  G10K11/17854 ,  G10K11/17881 ,  G10K11/17885 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/30232 ,  G10K2210/3026 ,  G10K2210/3028 ,  G10K2210/3051 ,  G10K2210/3055 ,  H04R1/1083 ,  H04R3/005

    Abstract: A personal audio device, such as a wireless telephone, includes an adaptive noise canceling (ANC) circuit that adaptively generates an anti-noise signal from a reference microphone signal that measures the ambient audio and an error microphone signal that measures the output of an output transducer plus any ambient audio at that location and injects the anti-noise signal at the transducer output to cause cancellation of ambient audio sounds. A processing circuit uses the reference and error microphone to generate the anti-noise signal, which can be generated by an adaptive filter operating at a multiple of the ANC coefficient update rate. Downlink audio can be combined with the high data rate anti-noise signal by interpolation. High-pass filters in the control paths reduce DC offset in the ANC circuits, and ANC coefficient adaptation can be halted when downlink audio is not detected.

    Abstract translation: 诸如无线电话的个人音频设备包括自适应噪声消除（ANC）电路，其自适应地从测量环境音频的参考麦克风信号产生抗噪声信号，以及测量输出的输出的误差麦克风信号 传感器加上该位置的任何环境音频，并在传感器输出端注入抗噪声信号，以引起环境音频声音的消除。 处理电路使用参考误差麦克风来产生抗噪声信号，该噪声信号可以由以ANC系数更新率的倍数操作的自适应滤波器生成。 下行音频可以通过插值与高数据速率的抗噪声信号组合。 控制路径中的高通滤波器减少了ANC电路中的DC偏移，并且当未检测到下行链路音频时，可以停止ANC系数适配。

    SYSTEMS AND METHODS FOR ENHANCING PERFORMANCE OF AUDIO TRANSDUCER BASED ON DETECTION OF TRANSDUCER STATUS
    4.
    发明申请
    SYSTEMS AND METHODS FOR ENHANCING PERFORMANCE OF AUDIO TRANSDUCER BASED ON DETECTION OF TRANSDUCER STATUS 有权
    基于检测传感器状态提高音频传感器性能的系统和方法

    公开(公告)号：US20150256953A1

    公开(公告)日：2015-09-10

    申请号：US14200458

    申请日：2014-03-07

    Applicant: Cirrus Logic, Inc.

    Inventor： Nitin Kwatra ,  John L. Melanson

    IPC: H04R29/00 ,  H04R3/00 ,  H04R1/10

    CPC classification number: H04R1/1083 ,  H04R5/04 ,  H04R2410/05 ,  H04R2460/01 ,  H04R2499/11

    Abstract: Based on transducer status input signals indicative of whether headphones housing respective transducers are engaged with ears of a listener, a processing circuit may determine whether the headphones are engaged with respective ears of the listener. Responsive to determining that at least one of the headphones is not engaged with its respective ear, the processing circuit may modify at least one of a first output signal to the first transducer and a second output signal to the second transducer such that at least one of the first output signal and the second output signal is different than such signal would be if the headphones were engaged with their respective ears.

    Abstract translation: 基于换能器状态输入信号，指示耳机是否包含各个换能器与收听者的耳朵接合，处理电路可以确定耳机是否与收听者的相应耳朵接合。 响应于确定耳机中的至少一个不与其相应的耳朵接合，处理电路可以将第一输出信号中的至少一个修改为第一换能器，并将第二输出信号修改为第二换能器，使得至少一个 第一输出信号和第二输出信号不同于这样的信号，如果耳机与它们各自的耳朵接合。

    Systems and methods for enhancing performance of audio transducer based on detection of transducer status
    6.
    发明授权
    Systems and methods for enhancing performance of audio transducer based on detection of transducer status 有权
    基于传感器状态的检测提高音频传感器的性能的系统和方法

    公开(公告)号：US09479860B2

    公开(公告)日：2016-10-25

    申请号：US14200458

    申请日：2014-03-07

    Applicant: Cirrus Logic, Inc.

    Inventor： Nitin Kwatra ,  John L. Melanson

    IPC: H04R29/00 ,  H04R1/10 ,  H04R5/04

    CPC classification number: H04R1/1083 ,  H04R5/04 ,  H04R2410/05 ,  H04R2460/01 ,  H04R2499/11

    Abstract: Based on transducer status input signals indicative of whether headphones housing respective transducers are engaged with ears of a listener, a processing circuit may determine whether the headphones are engaged with respective ears of the listener. Responsive to determining that at least one of the headphones is not engaged with its respective ear, the processing circuit may modify at least one of a first output signal to the first transducer and a second output signal to the second transducer such that at least one of the first output signal and the second output signal is different than such signal would be if the headphones were engaged with their respective ears.

    Abstract translation: 基于换能器状态输入信号，指示耳机是否包含各个换能器与收听者的耳朵接合，处理电路可以确定耳机是否与收听者的相应耳朵接合。 响应于确定耳机中的至少一个不与其相应的耳朵接合，处理电路可以将第一输出信号中的至少一个修改为第一换能器，并将第二输出信号修改为第二换能器，使得至少一个 第一输出信号和第二输出信号不同于这样的信号，如果耳机与它们各自的耳朵接合。

    Mic covering detection in personal audio devices
    7.
    发明授权
    Mic covering detection in personal audio devices 有权

    公开(公告)号：US10468048B2

    公开(公告)日：2019-11-05

    申请号：US14578567

    申请日：2014-12-22

    Applicant: Cirrus Logic, Inc.

    Inventor： Nitin Kwatra ,  Jeffrey Alderson ,  Jon D. Hendrix

    IPC: G10L21/0208 ,  G10K11/175 ,  G10K11/178 ,  H04M1/20

    Abstract: A personal audio device, such as a wireless telephone, includes noise canceling circuit that adaptively generates an anti-noise signal from a reference microphone signal and injects the anti-noise signal into the speaker or other transducer output to cause cancellation of ambient audio sounds. An error microphone may also be provided proximate the speaker to estimate an electro-acoustical path from the noise canceling circuit through the transducer. A processing circuit uses the reference and/or error microphone, optionally along with a microphone provided for capturing near-end speech, to determine whether one of the reference or error microphones is obstructed by comparing their received signal content and takes action to avoid generation of erroneous anti-noise.

    Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
    8.
    发明授权
    Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC) 有权

    公开(公告)号：US10249284B2

    公开(公告)日：2019-04-02

    申请号：US15786701

    申请日：2017-10-18

    Applicant: Cirrus Logic, Inc.

    Inventor： Nitin Kwatra ,  Ali Abdollahzadeh Milani ,  Jeffrey Alderson

    IPC: G10K11/178 ,  H04R1/10 ,  G10L21/0208 ,  G10L21/0364

    Abstract: A personal audio device, such as a wireless telephone, includes noise canceling that adaptively generates an anti-noise signal from a reference microphone signal and injects the anti-noise signal into the speaker or other transducer output to cause cancellation of ambient audio sounds. An error microphone is provided proximate the speaker to measure the output of the transducer in order to control the adaptation of the anti-noise signal and to estimate an electro-acoustical path from the noise canceling circuit through the transducer. The anti-noise signal is adaptively generated to minimize the ambient audio sounds at the error microphone. A processing circuit that performs the adaptive noise canceling (ANC) function also filters one or both of the reference and/or error microphone signals, to bias the adaptation of the adaptive filter in one or more frequency regions to alter a degree of the minimization of the ambient audio sounds at the error microphone.

    MIC COVERING DETECTION IN PERSONAL AUDIO DEVICES
    9.
    发明申请
    MIC COVERING DETECTION IN PERSONAL AUDIO DEVICES 审中-公开
    个人音响设备的麦克风覆盖检测

    公开(公告)号：US20150104032A1

    公开(公告)日：2015-04-16

    申请号：US14578567

    申请日：2014-12-22

    Applicant: Cirrus Logic, Inc.

    Inventor： Nitin Kwatra ,  Jeffrey Alderson ,  Jon D. Hendrix

    IPC: G10L21/0208 ,  G10K11/175 ,  H04M1/20

    CPC classification number: G10L21/0208 ,  G10K11/175 ,  G10K11/178 ,  G10K2210/108 ,  G10K2210/30231 ,  G10K2210/30391 ,  G10K2210/503 ,  H04M1/20

    Abstract: A personal audio device, such as a wireless telephone, includes noise canceling circuit that adaptively generates an anti-noise signal from a reference microphone signal and injects the anti-noise signal into the speaker or other transducer output to cause cancellation of ambient audio sounds. An error microphone may also be provided proximate the speaker to estimate an electro-acoustical path from the noise canceling circuit through the transducer. A processing circuit uses the reference and/or error microphone, optionally along with a microphone provided for capturing near-end speech, to determine whether one of the reference or error microphones is obstructed by comparing their received signal content and takes action to avoid generation of erroneous anti-noise.

    Abstract translation: 诸如无线电话的个人音频设备包括噪声消除电路，其自适应地从参考麦克风信号产生抗噪声信号，并将抗噪声信号注入到扬声器或其它换能器输出中以引起环境音频声音的消除。 还可以在扬声器附近提供误差麦克风以估计从噪声消除电路通过换能器的电声路径。 处理电路使用参考和/或误差麦克风，可选地与提供用于捕获近端语音的麦克风一起，通过比较其接收的信号内容来确定参考或误差麦克风中的一个是否被阻挡，并采取行动以避免产生 错误的抗噪声。

Patent Agency Ranking