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给信号加入噪声时,信噪比的控制小程序,基于matlab。-to signal to noise, the signal-to-noise ratio of the control of small procedures, based on Matlab.
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语音端点检测Matlab程序,附带计算信噪比的Matlab子程序,文本文档内是常用语音库的下载网址,非常使用-Voice activity detection Matlab program calculated signal to noise ratio with Matlab subroutine, the text is a common voice within the document library to download URL is used
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为提高语音端点检测(VAD)在较低信噪比(10 dB)下的准确率,提出一种基于短时分形维数的改进算法。结合语音信号的特点,对2种常用的语音信号分形维数计算方法进行了比较和选择,同时采用动态跟随门限值实现语音端点的自适应检测。试验结果表明:对于信噪比6~10 dB的带噪语音,此方法可以实现整段语音的检测,而且具有一定的噪声鲁棒性,系统运行期间能够自适应调整门限值以适应环境噪声的变化,提高了VAD算法的准确率。这个是源码matlab。-In order to improve voice activi
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语音信号的数字滤波处理
加入高斯噪声再滤除,信噪比小于20分贝-Voice signal digital filter handle add further filtered Gaussian noise, signal to noise ratio is less than 20 dB
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语音增强是影响语音识别系统性能的重要成分。为了比较语音增强算法的性能,采用Matlab软件进行了数值仿真,对不同噪声环境下的语音用3种不同的方法进行降噪,采用信噪比、端点检测等方法来降噪效果,并对几种增强算法的性能进行了比较分析。结果表明,在变噪声环境下短时谱MMSE法最佳,谱减法和维纳滤波法各有优点。-Speech enhancement of voice recognition is an important component of system performance. In order
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谱减算法的MATLAB实现程序,附带带噪语音文件。wavread一行可以改成自己需要的语音文件和噪声文件,可以查看输入和输出信噪比-MATLAB spectral subtraction algorithm implementation process, with noisy speech files. wavread line can be changed to their needs and noise files voice files, you can view the input an
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一个用matlab来实现的最小均方误差的信噪比和信干噪比-Using matlab to achieve the minimum mean square error, signal to noise ratio and signal to interference noise ratio
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