acoustic feedback

Acoustic feedback is a common phenomenon in public addressing system .

声反馈现象普遍存在各种扩声系统中。

Acoustic feedback is a common phenomenon in public addressing systems .

声反馈，是扩声系统中的一种常见现象。

The Prevention of the Acoustic Feedback in the Interior Sound Amplifying System

室内扩声系统中声反馈的预防

A direct result of acoustic feedback is sound distorted .

声反馈的产生直接导致声音出现失真。

Design and Implementation of Acoustic Feedback Suppresser Based on DSP

基于DSP的声反馈抑制器的设计与实现

Inhibition Feedback The design of notch for acoustic feedback suppression

声反馈抑制中的陷波器设计

Therefore , the acoustic feedback suppression is an important topic in sound amplifying system .

所以，声反馈控制是扩声系统中的一个重要课题。

The acoustic feedback even howling is a well-known problem in sound reinforcement system .

扩声系统中普遍存在由声反馈导致的啸叫问题。

In the speech communications , acoustic feedback makes bad influence to the quality of voice .

在语音通信过程中，声学反馈的存在严重影响语音质量，采用自适应滤波器进行声音反馈抑制是非常有效的方法。

Plugins for integration with Emacs or acoustic feedback are available .

目前，与Emacs编辑器整合的Autotest插件，或是acousticfeedback插件已经可以使用。

The acoustic feedback problem is a long-standing problem appearing in sound reinforcement systems and public address systems .

在扩声系统及公共广播（PublicAddress，PA）中，声反馈是一个长期存在的问题。

Howling produced here caused by acoustic feedback .

这里产生的啸叫是由声反馈引起的。

Automatic acoustic feedback suppression algorithm consists of two algorithms : digital equalization algorithm and automatic acoustic feedback suppression algorithm .

自动声反馈抑制算法包含两大算法：数字均衡算法和自动声反馈抑制算法。

The emergence of acoustic feedback limits the increase of system gain , and can not reach the PA effect .

声反馈的出现限制了系统增益的提升，达不到扩音的效果。

This paper describes the design of a frequency shifter to suppress acoustic feedback , to be studied by the experimental method .

本文叙述抑制声反馈的频移器的设计，并进行了实验研究。

Chapter 2 of this paper introduces the characteristic of acoustic feedback signal and the principle of automatic feedback exterminator .

本文第二章介绍声反馈信号的特征和自动声反馈抑制的原理等。

A method to obtain the diagnostic signal , the acoustic feedback control system and the principle of laser welding diamond saw are described in the paper .

介绍了特征声信号的提取方法及其用于激光焊接金刚石锯片的反馈控制系统构成和基本原理。

He speculated that the jet becomes unstable inside that gap , setting up an acoustic feedback loop within the gap .

他怀疑蒸汽经过盖子孔隙时变得不稳定，是在间隙内引起了声学回路。

For automatic acoustic feedback suppression algorithm is divided into the detection of acoustic feedback and determine the part , the acoustic feedback suppression part .

对于自动声反馈抑制算法，分为声反馈检测和判定部分、声反馈抑制部分。

In a variety of sound reinforcement system , acoustic feedback is a widespread phenomenon with the simultaneous use of the speaker and microphone .

在扩声系统中，由于同时使用了扬声器和麦克风，普遍存在声反馈现象。

These methods hurt the normal sound , only improve the system gain a little and are not easy to operate . A new generation of acoustic feedback suppresser appears .

这些方法不仅对音质损伤大、传声增益提高较小，操作也不方便。声反馈抑制器克服了传统声反馈抑制器的缺点，具有声音失真小、传声增益提高大和操作方便等优点。

An account is given for the method of calculation of sound transmission gains and the difference between the peak and average levels in the transmission response in terms of the acoustic feedback coefficient .

本文给出传声增益的计算方法，并用声反馈系数的测量来决定传输响应中最大峯级和平均级之间的差值。

The most important requirement is to protect against howling and echo , due to acoustic feedback from loudspeaker to microphone , and to ensure a sufficient listening level .

由于存在从扬声器到麦克风的声音反馈路径，为了得到满意的听音水平，最重要的需求就是应使这些系统具有抗自激和回波信号的能力。

The AEC has two main functions : eliminating the echoes due to acoustic feedback from loudspeaker to microphone and protecting the communication systems from howling and becoming unstable when this kind of feedback becomes seriously .

它有两个主要功能，一是消除因本地扬声器和麦克风之间因声耦合而产生的声回声；

Matching of dynamic feedback can expand the low frequency range and realize super & damping and low distortion . In which the acoustic feedback system has simple construction , and can make the loudspeaker super-miniaturized with excellent performance .

动态反馈配接可以展宽低频范围，实现超阻尼和低失真，其中声学反馈系统结构简单，宜于使扬声器系统超小型化，且性能良好。

At this stage , most of the volume of hearing aids is relatively small , from the speaker to the microphone acoustic feedback is relatively large , which will lead to " whistle " in the production .

现阶段助听器的体积大都比较小，从扬声器到麦克风的声学反馈相对较大，这将导致啸叫现象的产生。

To eliminate the influence of acoustic feedback of secondary sound field on reference microphone , the acoustic feedback channel has been integrated in the controller design , and so that the stability and noise reduction performance of ANC system is guarantied .

为有效地消减次级声场对参考传声器的声反馈影响，声反馈通道被融合于控制器的设计过程中，以保证ANC系统的稳定性和降噪效果。

At last the improved speech enhancement algorithm is successful operated on the hardware system . The system can play an inhibitory effect on the acoustic feedback , the basic purpose of rapid inhibition of the Howling and a small injury on the sound quality is achieved .

最后在硬件系统上成功运行了所设计的自动声反馈抑制算法，验证了算法的正确性，对声反馈起到了较好的抑制作用，基本达到了迅速抑制啸叫且对音质损伤较小的目的。

For a broadband AANC system , a smaller arrangement-angle can improve the directional radiation ability of the secondary source , and reduce the acoustic feedback from the secondary source to the input microphone , and this will greatly improve the stability of the control system .

对宽带有源消声系统而言，可以提高次级声源的指向性，减小系统存在的“声反馈”现象，提高控制系统的工作稳定性。

On the basis of the introduction of developments of active structural acoustic incidence control , feedback control method has been used here to control random incident noise transmission through a panel into a cavity .

在介绍有源结构声传入控制研究进展的基础上，本文用反馈控制方法对无规入射声场通过板向闭空间的传入进行了控制。