回声消除器 meaning in Chinese
echo canceller ec
Examples
- Echo canceller ec
回声消除器 - In chapter , the echo cancellation technique in ip gateway is studied . after that , we discuss the implement of echo canceller based on dsp
最后研究ip电话网关上的回声消除技术，给出基于dsp的回声消除器的软硬件实现。 - Section ii describes the design approach and implementation of speech module on mcf5249 coldfire core . the speech codec optimizes g . 729a codes and added voice activity detection of g . 729b to save bandwidth ; the implementation of acoustic echo cancellation uses nlms algorithm and it can reduce echo though designing adaptive fir filter and speech detector ; the dtmf and cpt generate signal using two second order digital sinusoidal oscillators and detect signal by picking up the frequency information . but only get the frequency information is not enough in cpt detector , this thesis introduces a method
其中对语音编解码器的设计采用优化g . 729a代码达到设计要求,并在此基础上加入g . 729b的静音检测模块,以进一步降低网络传输带宽;对回声消除器的设计采用nlms算法,通过设计自适应fir滤波器和语音检测器达到回声消除目的;对双音多频设计,信号发生端采用构造静态参数表并通过二阶正弦振荡器产生信号,信号检测端提取频率信息以检测信号;对呼叫进程音设计,除了类似双音多频的信号发生及频率检测设计外,还需要检测信号持续时间,作者设计了一种基于匹配状态表的方法以检测信号持续时间。 - We develop and produce the equipment of amplifiers . the main products are as follows : digital conference system , digital frequency shift amplifiers for teaching , long distance network conference system , simultaneous interpretation system and microphone for conference and special purpose . haisheng company has been dedicating to producing professional audio frequency equipment for conference and teaching
主要产品有：数字移频扩声设备dsp声反馈抑制扩声设备数字化会议系统同声传译系统网会通网络会议用usb speaker phone回声消除器界面话筒会议式鹅颈话筒高保真会议音柱专业麦克风等。