We will introduce PEAQ (Perceptual Evaluation of Audio Quality).
Can PEAQ perceive the difference between the reference sound and the target sound? It is a method to objectively evaluate by calculation. I think that it can be used to evaluate the performance of the limiter and the performance of the mp3 encoder.
According to Wikipedia, PEAQ seems to be protected by patents. So you can not use it freely. According to the site below, you may be able to sign a license via OPTICOM.
Implementation of PEAQ
In the following article, accuracy of multiple PEAQ and calculation time are compared. It seems that GstPEAQ is good for accuracy.
GstPEAQ – An Open Source Implementation of the PEAQ Algorithm
It is a PEAQ implementation created as a GStreamer plugin. It is implemented in C language and the license is LGPL 2.
PEAQ test data
The zip file that can be downloaded from the link below contains test data. According to the license notation in the zip file, it seems that it should not be used other than evaluation of PEAQ implementation.
We introduced about PEAQ. I thought about introducing it to AI Mastering, but I abandoned it because I can not use it freely.