语音评价指标PESQ的函数代码python

以下是Python中计算PESQ指标的函数代码：

import subprocess

def pesq(ref, deg):
    """
    Computes Perceptual Evaluation of Speech Quality (PESQ) metric between reference and degraded speech signals.
    Reference and degraded speech signals should be in wav format with identical format and length.
    """
    pesq_exe = "/path/to/pesq.exe"  # PESQ executable file path
    args = [pesq_exe, "+16000", "+wb", ref, deg]
    output = subprocess.check_output(args)
    output = output.decode('utf-8').split("\n")[-2]
    return float(output.split("=")[-1].strip())

其中，`ref`和`deg`分别是参考语音和测试语音的wav文件路径，`pesq.exe`是计算PESQ的可执行文件路径，本例中假设PESQ可执行文件已经安装在了计算机的指定路径下。函数返回的是PESQ得分，得分越高表示语音质量越好。