[vorbis] ABX at q8

John Morton jwm at plain.co.nz
Sun Jul 28 22:15:49 PDT 2002



On Sun, 28 Jul 2002 04:56, Bostjan wrote:
> I was just courious to know if anyone out there is able to distinguish
> from the original (ABX) Vorbis 1.0 at around q8 (or q7 to q9) on "NORMAL
> MUSIC" (not special test samples)??
>
> What about q5 to q7?

I did some more ABX testing of various samples of applause from some live 
albums, and most of them suffer from the same problem that the usual 
applause.wav sample has - a noticeable increase in a kind of crackly, hissy 
background noise. The ones that didn't suffer from this where already quite 
trebly, so the noise was masked. I can pick it out below q6 16/`16 at at q6 
13/16. At q7 I can't hear it at all. 

I expect I'll just stick to using 4.99 for most music and 7.0 for the live 
albums I have.

John

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