NLMS_AEC

quatization of audio signal and plot the signal after quantization

Voice decoder Standard interantional

说明：  g729a 语音编码,再linux c 环境下实现,有非常的好的移植性,通话质量好(g729a voice coding, and c linux environment, and it is very good transplant, good call quality)

可以对处理后的语音进行一个客观上的评判，提供客观评价因子。(It is possible to make an objective evaluation of the processed speech and provide an objective evaluation factor.)

双通道语音增强算法，消除环境噪声。采用归一化自适应方法，噪噪声抵消10dB，语音保持较好可懂度。(The dual-channel speech enhancement algorithm to eliminate ambient noise. Using normalized adaptive noise noise offset by 10dB, and the voice to maintain good intelligibility.)

26104-610.zip为欧洲G3的语音压缩标准gsmamr的C语言浮点算法的标准源程序。(26104- 610.zip for the European G3 voice compression standard C language gsmamr Floating Point Algorithm standard source.)

g.729编解码源代码，已经在freescale的处理器上面实现。(G.729 codec source code, has been in the Freescale processors to achieve the above.)

滤波器设计 　　　产生一个连续信号，包含低频，中频，高频分量，对其进行采样，进行频谱分析，分别设计低通，带通，高通滤波器对信号进行滤波处理，观察滤波前后信号的频谱。(The filter is designed to generate a continuous signal containing the low, mid, and high frequency components, to be sampled, for spectral analysis, respectively, to design a low-pass, band-pass filter processing is performed by a high-pass filter on the signal, the spectrum of the signal of the observation before and after filtering.)

说明：  脉冲编码调制(Pulse Code Modulation,PCM)技术编程(Pulse Code Modulation)

SEP matlab code for WSNs clustering