如何开始语音质量PESQ测试？

Question

我正在尝试进行语音质量测试(pesq)，但我不知道如何开始。我试图编译一个公共源代码(http://www.itu.int/itu-t/recommendations/index.aspx?ser=P (p.862))，但无法启动测试。有没有人用过这个？

Answer 1

您将需要一个C编译器( ITU PESQ reference implementation实际上是C，所以您不需要C++编译器，尽管这两个编译器都应该可以很好地工作)

例如，在linux上，您可以进入source目录并使用gcc进行编译

$ cd Software/P862_annex_A_2005_CD/source
$ gcc -o PESQ *.c

这会将文件dsp.c, pesqdsp.c, pesqio.c, pesqmain.c, pesqmod.c编译成二进制文件PESQ，然后您可以使用./PESQ运行该文件

$ ./PESQ
Perceptual Evaluation of Speech Quality (PESQ)
Reference implementation for ITU-T Recommendations P.862, P.862.1 and P.862.2.
Version 2.0 October 2005.

<snip long unenlightening IP notice>

Usage:
 PESQ HELP               Displays this text
 PESQ [options] ref deg
 Run model on reference ref and degraded deg

 Options: +8000 +16000 +swap +wb
  Sample rate - No default. Must select either +8000 or +16000.
  Swap byte order - machine native format by default. Select +swap for byteswap.
  Default mode of operation is P.862 (narrowband handset listening). Select +wb 
  to use P.862.2 wideband extension (headphone listening).

 File names may not begin with a + character.

 Files with names ending .wav or .WAV are assumed to have a 44-byte header, which is automatically skipped.  All other file types are assumed to have no header.

要运行此二进制文件并测试您的算法，您需要“参考”.wav文件(这是干净的原始语音)和“降级”的.wav文件(这是算法的输出)。只需将这两个参数传递给PESQ，它就会给出测试的输出。下面是一个运行在国际电信联盟源代码发行版中的两个.wav文件上的示例：

$ cd Software/P862_annex_A_2005_CD/conform
$ ../source/PESQ +8000 or105.wav dg105.wav
Perceptual Evaluation of Speech Quality (PESQ)
Reference implementation for ITU-T Recommendations P.862, P.862.1 and P.862.2.
Version 2.0 October 2005.

<snip IP notice>

Reading reference file or105.wav...done.
Reading degraded file dg105.wav...done.
 Level normalization...
 IRS filtering...
 Variable delay compensation...
 Acoustic model processing...

P.862 Prediction (Raw MOS, MOS-LQO):  = 2.237   1.844

其中，+8000参数表示以8000 at对wav文件进行采样。

Answer 2

在上一个版本的GCC中，你可能需要使用这个命令来编译：

gcc -o PESQ *.c -lm

BR

Answer 3

除了来自staticfloat的回答之外，基于AntoineF的回答，一些gcc版本可能会抛出以下警告：

pesqmain.c: In function 'main':
pesqmain.c:322:17: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long int' [-Wformat=]
     printf ("An error of type %d ", Error_Flag);
             ^
pesqmain.c: In function 'pesq_measure':
pesqmain.c:629:35: warning: format '%d' expects argument of type 'int', but argument 3 has type 'long int' [-Wformat=]
         fprintf (resultsFile, "%d\t", Fs);
                               ^
pesqmain.c:636:34: warning: too many arguments for format [-Wformat-extra-args]
        fprintf (resultsFile, "\n", Fs);

要解决此问题，您可以通过运行以下命令来明确忽略这些警告：

gcc -Wno-format -Wno-format-extra-args -o pesq *.c -lm  # works on Ubuntu 16.04, gcc 5.4.0

希望能对像我这样不熟悉C代码编译的人有所帮助！