Hi lame developers. I released some source code for the evaluation of audio quality at sourceforge http://sourceforge.net/projects/eaqual/ that might be interesting for codec testing.
The code is based on recommendation ITU-R BS.1387, which is an algorithmic description of a psychoacoustic and cognitive analysis model, since techniques like SNR, etc. are not useful for many measurement applications (like perception based audio codecs). The result of the algorithm is one value on a five-grade scale similar to that used for listening tests (-4: very annoying disturbance ... 0: no difference perceptible). The intention is of course not to supersede listening tests but to support them or/and to provide similar, objective and repeatable results in situations where listening tests can not (or not correctly) be performed. Since I developed only under Win32 it might be a little complicated to compile on other operating systems, but should be possible. Alexander -- alexander lerch [EMAIL PROTECTED] zplane.development http://www.zplane.de holsteinische str. 39-42 D-12161 berlin fon: +49.30.854 09 15.0 fax: +49.30.854 09 15.5 _______________________________________________ mp3encoder mailing list [EMAIL PROTECTED] http://minnie.tuhs.org/mailman/listinfo/mp3encoder
