matlab 评价指标erle

在MATLAB中，ERLE（Echo Return Loss Enhancement）评价指标用于衡量回声消除算法的效果。它是通过计算输入信号与模型输出信号之间的能量差异来评估回声消除的效果。评价指标ERLE的计算方法如下：

[nearSpeech, sr = audioread(nearSpeechDir); 
 = audioread(farSpeechDir); 
diffAverager = dsp.FIRFilter('Numerator', ones(1, 1024)); 
farEchoAverager = clone(diffAverager); 
erle = diffAverager((e - nearSpeech).^2) ./ farEchoAverager(farSpeechEcho.^2); 
erledB = -10*log10(erle); 

其中，`nearSpeech`代表近端信号，`farSpeech`代表远端信号，`e`代表模型输出的信号。通过计算`(e - nearSpeech).^2`和`farSpeechEcho.^2`的能量，并将结果带入上述公式，即可计算得到ERLE评价指标并转换为分贝单位（dB）表示。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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