[vorbis-dev] PreBeta4/First Results
xiphmont at xiph.org
Wed Jan 24 11:54:25 PST 2001
> My results are:
> -b 100: 111 kbps. sound quality is inacceptable, sounds a little like an
> old tape to me
> -b 112: 104 kbps, sounds ok for the bitrate/full stereo
These should be the same mode... unless Segher's mode_S is compiled
in, which it shouldn't be because it's broken. Are these the
downloads Jack made?
> -b 128: 124 kbps, sounds a little "flat"
Yeah, the different modes are mainly the amount of 'bit depth' that
gets encoded. Sort of like a false bottom to the audio, so the
impression that some depth got removed is accurate.
(More accurately, strong tones in beta 4 are usually encoded at
full/near-full resolution, and 'noise' has the depth limited. The
100-110 kbps mode limits tone resolution too.)
> The encoder tripled in speed compared to beta3 on my duron 700.
Ahh, good to know.
> I'm still waiting for the channel-coupling to compare the results to other
> formats in a fair way :)
I can't wait either, but this isn't something that I'm going to rush ;-)
Thanks for taking the time to test it.
--- >8 ----
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