公开(公告)号：US20130129105A1

公开(公告)日：2013-05-23

申请号：US13655819

申请日：2012-10-19

Applicant: Parrot

Inventor： Phong Hua

IPC: G10K11/16

CPC classification number: H04R1/1083 ,  H04R1/1008 ,  H04R5/033 ,  H04R2201/107 ,  H04R2420/07 ,  H04R2460/01 ,  H04R2460/05

Abstract: The headset comprises two earpieces each having a transducer for playing back the sound of an audio signal and received in an acoustic cavity defined by a shell having an ear-surrounding cushion. The active noise control comprises, in parallel, a feedforward bandpass filter receiving the signal from an external microphone, a feedback bandpass filter receiving as input an error signal delivered by an internal microphone, and a stabilizer bandpass filter locally increasing the phase of the transfer function of the feedback filter in an instability zone, in particular a waterbed effect zone around 1 kHz. A summing circuit delivers a weighting linear combination of the signal delivered by these filters together with the audio signal to be played back. Control is non-adaptive, with the parameters of the filters being static.

Abstract translation: 耳机包括两个耳机，每个耳机具有用于播放音频信号的声音的换能器，并被接收在由具有耳环垫的外壳限定的声腔中。 主动噪声控制并行地包括接收来自外部麦克风的信号的前馈带通滤波器，作为输入接收内部麦克风传送的误差信号的反馈带通滤波器和局部增加传递函数相位的稳定带通滤波器 在不稳定区域，特别是大约1kHz的水床效应区域的反馈滤波器。 求和电路将由这些滤波器传递的信号与要播放的音频信号一起加权线性组合。 控制是非自适应的，滤波器的参数是静态的。

公开(公告)号：US20150332662A1

公开(公告)日：2015-11-19

申请号：US14692541

申请日：2015-04-21

Applicant: PARROT

Inventor： Vu Hoang Co Thuy ,  Benoit Pochon ,  Phong Hua ,  Pierre Guiu

IPC: G10K11/175

CPC classification number: G10K11/175 ,  H04R1/1008 ,  H04R1/1083 ,  H04R5/033 ,  H04R2420/01

Abstract: The headset includes an active noise control, with an internal ANC microphone (28) placed inside the acoustic cavity (22) and delivering a signal including an acoustic noise component. A digital signal processor DSP (50) comprises a feedback ANC branch (54) applying a filtering transfer function (54, HFB2) to the signal delivered by the ANC microphone, and means (46) for mixing the signal of the feedback branch with an audio signal to be reproduced (M). The headset comprises a movement sensor (64) mounted on one of the earphones. The DSP comprises means (68) for analysing concurrently i) the signal delivered by the internal microphone (28) and ii) the signal delivered by the movement sensor (64), and verifying whether current characteristics of these signals fulfil or not a set of predetermined criteria. Upstream from the feedback ANC filter (54), an anti-saturation filter (70, HFB1) is selectively switched as a function of the result of this verification. The filtering of an equalization branch (58, HEQ2) of the signal to be reproduced (M) is also modified by a similar anti-saturation filter (72, HEQ1).

Abstract translation: 头戴式耳机包括主动噪声控制，其中内部ANC麦克风（28）放置在声腔（22）内部并传送包括声学噪声分量的信号。 数字信号处理器DSP（50）包括对由ANC麦克风传送的信号应用滤波传递函数（54，HFB2）的反馈ANC分支（54）和用于将反馈分支的信号与 要再现的音频信号（M）。 耳机包括安装在其中一个耳机上的运动传感器（64）。 DSP包括用于同时分析i）由内部麦克风（28）传送的信号和ii）由移动传感器（64）传递的信号的装置（68），并且验证这些信号的当前特性是否满足一组 预定标准。 根据反馈ANC滤波器（54）的上游，根据该验证的结果有选择地切换抗饱和滤波器（70，HFB1）。 要再现的信号（M）的均衡分支（58，HEQ2）的滤波也由类似的抗饱和滤波器（72，HEQ1）修改。

公开(公告)号：US08948409B2

公开(公告)日：2015-02-03

申请号：US13655819

申请日：2012-10-19

Applicant: Parrot

Inventor： Phong Hua

IPC: G10K11/16 ,  H04R1/10 ,  H04R5/033

CPC classification number: H04R1/1083 ,  H04R1/1008 ,  H04R5/033 ,  H04R2201/107 ,  H04R2420/07 ,  H04R2460/01 ,  H04R2460/05

Abstract: The headset comprises two earpieces each having a transducer for playing back the sound of an audio signal and received in an acoustic cavity defined by a shell having an ear-surrounding cushion. The active noise control comprises, in parallel, a feedforward bandpass filter receiving the signal from an external microphone, a feedback bandpass filter receiving as input an error signal delivered by an internal microphone, and a stabilizer bandpass filter locally increasing the phase of the transfer function of the feedback filter in an instability zone, in particular a waterbed effect zone around 1 kHz. A summing circuit delivers a weighting linear combination of the signal delivered by these filters together with the audio signal to be played back. Control is non-adaptive, with the parameters of the filters being static.

Abstract translation: 耳机包括两个耳机，每个耳机具有用于播放音频信号的声音的换能器，并被接收在由具有耳环垫的外壳限定的声腔中。 主动噪声控制并行地包括接收来自外部麦克风的信号的前馈带通滤波器，作为输入接收内部麦克风传送的误差信号的反馈带通滤波器和局部增加传递函数相位的稳定带通滤波器 在不稳定区域，特别是大约1kHz的水床效应区域的反馈滤波器。 求和电路将由这些滤波器传递的信号与要播放的音频信号一起加权线性组合。 控制是非自适应的，滤波器的参数是静态的。

公开(公告)号：US09466281B2

公开(公告)日：2016-10-11

申请号：US14692541

申请日：2015-04-21

Applicant: PARROT

Inventor： Vu Hoang Co Thuy ,  Benoit Pochon ,  Phong Hua ,  Pierre Guiu

IPC: G10K11/16 ,  H03B29/00 ,  G10K11/175 ,  H04R1/10 ,  H04R5/033

CPC classification number: G10K11/175 ,  H04R1/1008 ,  H04R1/1083 ,  H04R5/033 ,  H04R2420/01

Abstract: The headset includes an active noise control, with an internal ANC microphone (28) placed inside the acoustic cavity (22) and delivering a signal including an acoustic noise component. A digital signal processor DSP (50) comprises a feedback ANC branch (54) applying a filtering transfer function (54, HFB2) to the signal delivered by the ANC microphone, and a mixer (60) for mixing the signal of the feedback branch with an audio signal to be reproduced (M). The headset comprises a movement sensor (64) mounted on one of the earphones. The DSP comprises an anti-saturation module (68) for analyzing concurrently i) the signal delivered by the internal microphone (28) and ii) the signal delivered by the movement sensor (64), and verifying whether current characteristics of these signals fulfill or not a set of predetermined criteria. Upstream from the feedback ANC filter (54), an anti-saturation filter (70, HFB1) is selectively switched as a function of the result of this verification. The filtering of an equalization branch (58, HEQ2) of the signal to be reproduced (M) is also modified by a similar anti-saturation filter (72, HEQ1).

Abstract translation: 头戴式耳机包括主动噪声控制，其中内部ANC麦克风（28）放置在声腔（22）内部并传送包括声学噪声分量的信号。 数字信号处理器DSP（50）包括向由ANC麦克风传送的信号应用滤波传递函数（54，HFB2）的反馈ANC分支（54）和混合器（60），用于将反馈分支的信号与 要再现的音频信号（M）。 耳机包括安装在其中一个耳机上的运动传感器（64）。 DSP包括抗饱和模块（68），用于同时分析i）由内部麦克风（28）传递的信号和ii）由移动传感器（64）传递的信号，并验证这些信号的电流特性是否满足或 不是一套预先确定的标准。 根据反馈ANC滤波器（54）的上游，根据该验证的结果有选择地切换抗饱和滤波器（70，HFB1）。 要再现的信号（M）的均衡分支（58，HEQ2）的滤波也由类似的抗饱和滤波器（72，HEQ1）修改。

公开(公告)号：US20150296297A1

公开(公告)日：2015-10-15

申请号：US14677842

申请日：2015-04-02

Applicant: PARROT

Inventor： Phong Hua ,  Vu Hoang Co Thuy ,  Pierre Guiu

IPC: H04R3/00 ,  H04R1/10

CPC classification number: H04R3/002 ,  G10K11/1783 ,  G10K11/17875 ,  G10K11/17885 ,  G10K2210/1081 ,  G10K2210/3026 ,  H04R1/10 ,  H04R1/1083 ,  H04R2460/01

Abstract: The headset includes an active noise control system, with an ANC microphone delivering a signal including an acoustic noise component. A digital signal processor DSP (50) comprises a feedback ANC branch (54) applying a filtering transfer function (HFB) to the signal picked up by the ANC microphone, and means (46) for mixing the signal of the feedback branch with an audio signal to be reproduced (M). The ANC microphone is an internal microphone (28) placed inside the acoustic cavity (22), and the feedback ANC filter (54) is one between a plurality of selectively switchable, pre-configured feedback ANC filter. The DSP (50) comprises means (62) for verifying whether current characteristics of the microphone signal fulfil or not a set of predetermined criteria, and for selecting one of the pre-configured feedback ANC filters as a function of the result of this verification. The filtering (HEQ) of an equalization branch (58) of the signal to be reproduced (M) is also modified as a function of the current selected feedback ANC filter.

Abstract translation: 耳机包括主动噪声控制系统，ANC麦克风传送包括声学噪声分量的信号。 数字信号处理器DSP（50）包括对由ANC麦克风拾取的信号应用滤波传递函数（HFB）的反馈ANC分支（54）和用于将反馈分支的信号与音频混合的装置（46） 要再现的信号（M）。 ANC麦克风是放置在声腔（22）内部的内部麦克风（28），并且反馈ANC滤波器（54）是多个可选择切换的，预先配置的反馈ANC滤波器之间的一个。 DSP（50）包括用于验证麦克风信号的当前特性是否满足一组预定标准的装置（62），以及用于根据该验证的结果来选择预配置的反馈ANC滤波器之一。 要再现的信号（M）的均衡支路（58）的滤波（HEQ）也被修改为当前选择的反馈ANC滤波器的函数。