[opus] ODG (Objective Difference Grade) scores for Opus Encoder using PQEvalAudio Tool

Christian Hoene
2013-10-04T12:00:21Z

Hi Rhishi,



PQevalaudio is very unreliable and buggy. I have compared to PEAQ and - as a
result - now I am not using it anymore.



With best regards,



Christian Hoene





Von: opus-bounces at xiph.org [mailto:opus-bounces at xiph.org] Im Auftrag von
Rhishikesh Agashe
Gesendet: Freitag, 4. Oktober 2013 12:35
An: opus at xiph.org
Cc: Rasmi Mishra
Betreff: [opus] ODG (Objective Difference Grade) scores for Opus Encoder
using PQEvalAudio Tool



Hi,



I checked the ODG (Objective Difference Grade) scores for a few reference
vectors using the PQEvalAudio Tool and found that some of them show ODG
scores as high as -3.5



If we look at the range as described in the link below, it looks
unacceptable.

http://www-mmsp.ece.mcgill.ca/documents/Software/Packages/AFsp/PQevalAudio.h
tml



Am I missing something or are these scores valid?



Thanks and Regards,

Rhishi



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