CN111292714A - 一种用于混合声品质控制系统的改进结构 - Google Patents

一种用于混合声品质控制系统的改进结构 Download PDF

Info

Publication number
CN111292714A
CN111292714A CN202010092119.1A CN202010092119A CN111292714A CN 111292714 A CN111292714 A CN 111292714A CN 202010092119 A CN202010092119 A CN 202010092119A CN 111292714 A CN111292714 A CN 111292714A
Authority
CN
China
Prior art keywords
signal
control filter
feedback control
output signal
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010092119.1A
Other languages
English (en)
Inventor
靳国永
李善军
叶天贵
陈玉坤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin Engineering University
Original Assignee
Harbin Engineering University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harbin Engineering University filed Critical Harbin Engineering University
Priority to CN202010092119.1A priority Critical patent/CN111292714A/zh
Publication of CN111292714A publication Critical patent/CN111292714A/zh
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17879—General system configurations using both a reference signal and an error signal
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17813—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms
    • G10K11/17817—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms between the output signals and the error signals, i.e. secondary path
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17853—Methods, e.g. algorithms; Devices of the filter
    • G10K11/17854—Methods, e.g. algorithms; Devices of the filter the filter being an adaptive filter
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1781—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions
    • G10K11/17813—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms
    • G10K11/17815—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase characterised by the analysis of input or output signals, e.g. frequency range, modes, transfer functions characterised by the analysis of the acoustic paths, e.g. estimating, calibrating or testing of transfer functions or cross-terms between the reference signals and the error signals, i.e. primary path
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3026—Feedback
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3027—Feedforward
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3028—Filtering, e.g. Kalman filters or special analogue or digital filters

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

本发明的目的在于提供一种用于混合声品质控制系统的改进结构，包括自适应前馈控制结构、自适应反馈控制结构、线谱噪声抵消控制结构，本发明将声品质控制和混合有源噪声控制系统相结合，不仅可以控制线谱噪声的声品质，还可以抵消宽带噪声对系统的干扰。本发明通过改进混合有源声品质控制系统中反馈控制结构参考信号的合成方式，可降低反馈控制滤波器和线谱噪声抵消控制滤波器权系数的更新对前馈控制滤波器权系数更新的影响。本发明中的改进结构可以提高控制滤波器权系数更新的稳定性，加快控制滤波器的收敛速度，提高降噪性能。

Description

一种用于混合声品质控制系统的改进结构
技术领域
本发明涉及的是一种有源噪声控制系统。
背景技术
随着有源噪声控制技术的发展，声音舒适度即声品质的研究得到人们的广泛关注，在宽带扰动干扰下，为实现对线谱噪声的声品质控制，提出了传统的混合有源声品质控制系统。传统的控制系统中滤波器收敛稳定较差。
发明内容
本发明的目的在于提供在保证降噪量的同时、提升前反馈结构控制滤波器稳定性的一种用于混合声品质控制系统的改进结构。
本发明的目的是这样实现的：
本发明一种用于混合声品质控制系统的改进结构，其特征是：包括自适应前馈控制结构、自适应反馈控制结构、线谱噪声抵消控制结构，自适应前馈控制结构和线谱噪声抵消控制结构的参考信号为x(n)；
参考信号x(n)经初级路径P(z)后得到期望信号d(n)，前馈控制滤波器Wf(z)以参考信号x(n)为输入，产生输出信号yf(n)，经增益1-β后与反馈控制滤波器Wb(z)输出信号yb(n)的合成信号经次级路径模型S(z)后，与期望信号d(n)和随机扰动信号v(n)合成残余误差信号e(n)，残余误差信号e(n)经增益β和次级路径估计模型
Figure BDA0002384040660000011
滤波的输出信号yf(n)和经次级路径估计模型
Figure BDA0002384040660000012
滤波的反馈控制滤波器Wb(z)输出信号yb(n)共同合成虚拟误差信号e′(n)，虚拟误差信号e′(n)作为前馈控制结构的误差信号，与经次级路径估计模型
Figure BDA0002384040660000013
滤波后的参考信号x(n)共同参与前馈控制滤波器Wf(z)的权系数更新；
自适应反馈控制结构的参考信号xb(n)由残余误差信号e(n)、经次级路径估计模型
Figure BDA0002384040660000014
滤波后的反馈控制滤波器Wb(z)输出信号yb(n)和线谱噪声抵消控制滤波器Wc(z)的输出信号yc(n)三种信号合成，参考信号xb(n)作为反馈控制滤波器Wb(z)的输入信号产生输出信号yb(n)，经次级路径估计模型
Figure BDA0002384040660000021
滤波后的自适应反馈控制结构的参考信号xb(n)与残余误差信号e(n)共同参与反馈控制滤波器Wb(z)的权系数更新；
线谱噪声抵消控制滤波器Wc(z)以参考信号为x(n)为输入信号产生输出信号yc(n)，参考信号xb(n)作为反馈控制结构的误差信号，与参考信号为x(n)共同参与线谱噪声抵消控制滤波器Wc(z)权系数的更新。
本发明还可以包括：
1、反馈控制滤波器参考输入信号，由残余噪声信号与反馈控制滤波器和线谱噪声抵消控制滤波器输出信号三种信号合成而来，公式为
Figure BDA0002384040660000022
其中，e(n)为残余噪声信号，yc(n)为线谱噪声抵消控制滤波器输出信号，yb(n)为反馈控制滤波器输出信号，
Figure BDA0002384040660000023
为次级路径估计模型。
本发明的优势在于：本发明通过改进混合声品质控制系统中反馈控制结构的参考信号合成方式，在保证降噪量的同时，降低反馈控制滤波器和线谱噪声抵消控制滤波器权系数的更新对前馈控制滤波器权系数更新的影响，提升前反馈结构控制滤波器的稳定性。
附图说明
图1为本发明系统结构图；
图2为前馈滤波器收敛曲线图；
图3为反馈滤波器收敛曲线图；
图4为增益因子为0.5时改进的混合有源声品质控制结构中噪声控制前后频谱图。
具体实施方式
下面结合附图举例对本发明做更详细地描述：
结合图1-4，图1所示为改进的混合有源声品质控制系统结构，该系统主要包含前馈的线谱噪声声品质控制结构、反馈的宽带干扰噪声抵消结构和线谱噪声抵消控制结构三部分。前馈的线谱噪声声品质控制结构中的滤波器使用FxLMS算法，通过设置不同的增益因子，可以控制线谱噪声幅值的抵消，保持和放大，从而达到提高线谱噪声声品质的目的。反馈的宽带干扰噪声抵消结构中的滤波器使用FxLMS算法，主要抵消系统中的宽带干扰噪声。线谱噪声抵消控制结构中的滤波器使用LMS算法，用来抵消系统残余误差信号中剩余的线谱噪声，从而参与反馈控制结构中参考信号的合成。
图1中最上面实线框为自适应前馈控制结构，参考信号x(n)经初级路径P(z)后得到期望信号d(n)。前馈控制滤波器Wf(z)以参考信号x(n)为输入，产生输出信号yf(n)，经增益1-β后与反馈控制滤波器Wb(z)输出信号yb(n)的合成信号经次级路径模型S(z)后，与期望信号d(n)和随机扰动信号v(n)合成残余误差信号e(n)。残余误差信号e(n)，经增益β和次级路径估计模型
Figure BDA0002384040660000031
滤波的输出信号yf(n)和经次级路径估计模型
Figure BDA0002384040660000032
滤波的反馈控制滤波器Wb(z)输出信号yb(n)共同合成虚拟误差信号e′(n)。该虚拟误差信号e′(n)作为前馈控制结构的误差信号，与经次级路径估计模型
Figure BDA0002384040660000033
滤波后的参考信号x(n)共同参与前馈控制滤波器Wf(z)的权系数更新。中间虚线框为自适应反馈控制结构，该反馈控制结构的参考信号xb(n)由残余误差信号e(n)，经次级路径估计模型
Figure BDA0002384040660000034
滤波后的反馈控制滤波器Wb(z)输出信号yb(n)和线谱噪声抵消控制滤波器Wc(z)的输出信号yc(n)三种信号合成。反馈控制结构的参考信号xb(n)作为反馈控制滤波器Wb(z)的输入信号产生输出信号yb(n)。经次级路径估计模型
Figure BDA0002384040660000035
滤波后的反馈控制结构的参考信号xb(n)与残余误差信号e(n)共同参与反馈控制滤波器Wb(z)的权系数更新。最下方点划线框是线谱噪声抵消控制结构，该控制结构的参考信号为x(n)，线谱噪声抵消控制滤波器Wc(z)以参考信号为x(n)为输入信号产生输出信号yc(n)。参考信号xb(n)作为反馈控制结构的误差信号，与参考信号为x(n)共同参与线谱噪声抵消控制滤波器Wc(z)权系数的更新。
本发明中是通过改进混合有源声品质控制系统中反馈控制结构参考信号xb(n)合成方式来更新反馈控制滤波器Wb(z)的权系数，参考信号xb(n)合成公式为
Figure BDA0002384040660000036
误差信号，反馈控制滤波器输出信号yb(n)与次级路径估计模型
Figure BDA0002384040660000037
的乘积和线谱噪声抵消控制滤波器Wc(z)输出信号yc(n)构成反馈控制结构参考信号xb(n)。

Claims (2)

1.一种用于混合声品质控制系统的改进结构，其特征是：包括自适应前馈控制结构、自适应反馈控制结构、线谱噪声抵消控制结构，自适应前馈控制结构和线谱噪声抵消控制结构的参考信号为x(n)；
参考信号x(n)经初级路径P(z)后得到期望信号d(n)，前馈控制滤波器Wf(z)以参考信号x(n)为输入，产生输出信号yf(n)，经增益1-β后与反馈控制滤波器Wb(z)输出信号yb(n)的合成信号经次级路径模型S(z)后，与期望信号d(n)和随机扰动信号v(n)合成残余误差信号e(n)，残余误差信号e(n)经增益β和次级路径估计模型
Figure FDA0002384040650000011
滤波的输出信号yf(n)和经次级路径估计模型
Figure FDA0002384040650000012
滤波的反馈控制滤波器Wb(z)输出信号yb(n)共同合成虚拟误差信号e′(n)，虚拟误差信号e′(n)作为前馈控制结构的误差信号，与经次级路径估计模型
Figure FDA0002384040650000013
滤波后的参考信号x(n)共同参与前馈控制滤波器Wf(z)的权系数更新；
自适应反馈控制结构的参考信号xb(n)由残余误差信号e(n)、经次级路径估计模型
Figure FDA0002384040650000014
滤波后的反馈控制滤波器Wb(z)输出信号yb(n)和线谱噪声抵消控制滤波器Wc(z)的输出信号yc(n)三种信号合成，参考信号xb(n)作为反馈控制滤波器Wb(z)的输入信号产生输出信号yb(n)，经次级路径估计模型
Figure FDA0002384040650000015
滤波后的自适应反馈控制结构的参考信号xb(n)与残余误差信号e(n)共同参与反馈控制滤波器Wb(z)的权系数更新；
线谱噪声抵消控制滤波器Wc(z)以参考信号为x(n)为输入信号产生输出信号yc(n)，参考信号xb(n)作为反馈控制结构的误差信号，与参考信号为x(n)共同参与线谱噪声抵消控制滤波器Wc(z)权系数的更新。
2.根据权利要求1所述的一种用于混合声品质控制系统的改进结构，其特征是：反馈控制滤波器参考输入信号，由残余噪声信号与反馈控制滤波器和线谱噪声抵消控制滤波器输出信号三种信号合成而来，公式为
Figure FDA0002384040650000021
其中，e(n)为残余噪声信号，yc(n)为线谱噪声抵消控制滤波器输出信号，yb(n)为反馈控制滤波器输出信号，
Figure FDA0002384040650000022
为次级路径估计模型。
CN202010092119.1A 2020-02-14 2020-02-14 一种用于混合声品质控制系统的改进结构 Pending CN111292714A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010092119.1A CN111292714A (zh) 2020-02-14 2020-02-14 一种用于混合声品质控制系统的改进结构

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010092119.1A CN111292714A (zh) 2020-02-14 2020-02-14 一种用于混合声品质控制系统的改进结构

Publications (1)

Publication Number Publication Date
CN111292714A true CN111292714A (zh) 2020-06-16

Family

ID=71030015

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010092119.1A Pending CN111292714A (zh) 2020-02-14 2020-02-14 一种用于混合声品质控制系统的改进结构

Country Status (1)

Country Link
CN (1) CN111292714A (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111508465A (zh) * 2020-02-14 2020-08-07 哈尔滨工程大学 一种用于混合声品质控制系统的简化结构
CN111800694A (zh) * 2020-06-30 2020-10-20 深圳市豪恩声学股份有限公司 一种主动降噪耳机的滤波器设计方法、装置及测试设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SHANJUN LI 等: "Modified Structures for Hybrid Active Sound Quality Control System Disturbed by Gaussian Random Noise" *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111508465A (zh) * 2020-02-14 2020-08-07 哈尔滨工程大学 一种用于混合声品质控制系统的简化结构
CN111800694A (zh) * 2020-06-30 2020-10-20 深圳市豪恩声学股份有限公司 一种主动降噪耳机的滤波器设计方法、装置及测试设备

Similar Documents

Publication Publication Date Title
CN111883095B (zh) 主动降噪方法、装置、系统以及相关设备
US5524057A (en) Noise-canceling apparatus
EP1992193B1 (en) Hearing aid and method of utilizing gain limitation in a hearing aid
CN111292714A (zh) 一种用于混合声品质控制系统的改进结构
EP1615463B1 (en) Adaptive howling canceller
US5410606A (en) Noise canceling method
US11276385B2 (en) Noise reduction device, vehicle, noise reduction system, and noise reduction method
CN106210986A (zh) 主动降噪系统
CN111522244A (zh) 一种使用泄漏FxLMS算法的主动控制系统
CN102143426B (zh) 用于抑制听力设备中的声学反馈的方法及对应的听力设备
JPH08241086A (ja) 雑音消去装置
JPH04267298A (ja) 音響システムにおけるアクティブ減衰方法
CN110718205B (zh) 一种无次级路径有源噪声控制系统及实现方法
JP7374595B2 (ja) 対角化フィルタ行列を利用した能動騒音消去システム
JP7123492B2 (ja) 能動型騒音制御システム、能動型騒音制御システムの設定方法及びオーディオシステム
US20010036283A1 (en) Active noise reduction system
CN109747575A (zh) 一种基于阶次优化的多模式车内声品质优化系统
CN108768346B (zh) 车辆主动减振降噪系统及方法
CN106935238A (zh) 一种基于最优临界频带幅值增益控制的主动噪声均衡控制方法
CN114582312B (zh) 一种车内抗干扰自适应路噪主动控制方法及控制系统
JP2008137636A (ja) 能動型騒音制御装置
CN113078884B (zh) 添加非线性拟合的自适应算法
CN114464157A (zh) 一种车辆的主动降噪方法及设备、存储介质
CN107666637B (zh) 自调式主动噪声消除方法、系统及耳机装置
CN111508465A (zh) 一种用于混合声品质控制系统的简化结构

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20200616