PESQ and its implementation in Octave/Matlab

PESQ stands for ‘Perceptual Evaluation of Speech Quality’ and is an enhanced perceptual measurement for voice quality in telecommunications. If you want a Mean Opinion Score value (or MOS), then PESQ will give it to you. The new PESQ option will be especially relevant for engineers working in telecom, handsets, and handsfree accessories. Because it becomes standard in telecommunication industry, it is very important to measure of speech processing output with this standar. A figure of overview of PESQ system can be seen in Fig.1.

Fig. 1 : Overview of PESQ System[ [1]

Perceptual audio tests measure how people perceive sound quality. While useful for evaluating both small differences in high-quality music, and larger differences in lower-quality voice material, this article focuses on doing the latter using PESQ (Perceptual Evaluation of Speech Quality).