The perceptual analysis measurement system for robust end-to-end speech quality assessment. - Antony W. Rix; Michael P. Hollier (ICASSP, 2000)

Perceptual evaluation of speech quality (PESQ)-a new method for speech quality assessment of telephone networks and codecs. - Antony W. Rix; John G. Beerends; Michael P. Hollier; Andries P. Hekstra (ICASSP, 2001)