Long time ago, I collected some information about durations and no of sample items: http://tools.ietf.org/html/draft-hoene-codec-quality-01#page-8 For MUSHRA: In 30 minutes, about 42 stimuli can be tested. For ACS : Listeners can judge about 54 stimuli within 30 minutes.
That's what I have been told. ACS is faster but less precise. With best regards, Christian -----Ursprüngliche Nachricht----- Von: Paul Coverdale [mailto:[email protected]] Gesendet: Mittwoch, 17. April 2013 16:30 An: 'Jean-Marc Valin' Cc: 'Jean-Marc Valin'; 'Christian Hoene'; [email protected]; [email protected]; [email protected] Betreff: RE: [codec] Opus comparision test plan >MUSHRA is actually the least time-consuming... This isn't what my colleagues in ITU-T and 3GPP, who are heavily involved in codec subjective testing, are telling me. Typically, you can only test about 12 conditions at a time. ...Paul _______________________________________________ codec mailing list [email protected] https://www.ietf.org/mailman/listinfo/codec
