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Re: Music Transmission Index?
In 1998 and 2001, the International Telecommunications Union (ITU) published
a recommendation for the objective quality measurement of music,
particularly music that has been degraded somewhat by lossy compression
algorithms such as mp3. The measurement method, called PEAQ for "Perceptual
Evaluation of Audio Quality", compares physical attributes of a processed
audio signal with the original signal. The method was calibrated using data
from a number of human listening experiments conducted in several
laboratories. Generalization tests using data from new experiments gave
correlations well over .8 between the PEAQ measure and average subjective
quality ratings. Correlations between simple SNR and average subjective
quality ratings were always much lower.
The PEAQ quality measure might be considered a "Music Transmission Index".
Links to information about PEAQ may be found at