Interspeech'2005 - Eurospeech
To evaluate the speech quality of actual cellular phone systems with an objective assessment, PESQ values were compared with MOS values for speech with background noises via four cellular phone systems used in Japan. As PESQ value errors were observed to be SNR-dependent, two SNR-dependent background noise compensation methods for PESQ values are proposed. Applying the compensation methods to the speech for four cellular phone systems, the RMSEs between MOS and compensated PESQ values were reduced to less than half of the original RMSEs for all four cellular phone systems. They were equal to the level of RMSE of MOS values.
Bibliographic reference. Fujita, Kengo / Kato, Tsuneo / Yamada, Hideaki / Kawai, Hisashi (2005): "SNR-dependent background noise compensation of PESQ values for cellular phone speech", In INTERSPEECH-2005, 3165.