How to start a voice quality PESQ test?

Question

I'm trying to do a voice quality test (pesq), but I don't understand how to start. I trying to compile a public source code (http://www.itu.int/itu-t/recommendations/index.aspx?ser=P (p.862)) but can't start a test. Maybe anyone work with this?

Answer 1

You will need a C compiler (The ITU PESQ reference implementation is actually C, so you don't need a C++ compiler, although both should work just fine)

For instance, on linux, you would enter the source directory and compile with gcc:

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

This will compile the files dsp.c, pesqdsp.c, pesqio.c, pesqmain.c, pesqmod.c into a binary file PESQ which you can then run with ./PESQ:

$ ./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.

To run this binary and test your algorithm, you need the "reference" .wav file (This is the clean, original speech) and the "degraded" .wav file (This is the output of your algorithm). Simply pass both into PESQ, and it will give you the output of the test. An example run on two .wav files included in the source distribution from the ITU:

$ 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

Where the +8000 parameter denotes that the wav files are sampled at 8000Hz.