Evaluation of the ITU-R objective audio quality measurement method

The ITU-R recommended method for objective quality measurements of wide-ban dwidth audio systems was evaluated by predicting the subjective performance of several perceptual audio codecs. The results show that the predicted qu ality ratings for the codecs correlate well with subjective ratings obtaine d from a formal listening test. Further, the objective quality measurements averaged over audio items were statistically indistinguishable from simila rly averaged subjective quality ratings. Finally, mean objective codec qual ity measurements generated from a larger number of preselected audio items were found to be similar to the subjective ratings and objective quality me asurements for a few critical items chosen for the listening test.