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Speex For Music: Send Your Comments.
jmvalin
post Aug 30 2002, 00:04
Post #1


Xiph.org Speex developer


Group: Developer
Posts: 487
Joined: 21-August 02
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In the last Speex version (0.8.0), I added a new 42.2 kbps wideband mode which I'd qualify as the first non-catastrophic mode for music. I'd like to have feedback on music quality using that mode, let's say on a scale between "You call that music?" and "Almost as good as MP3". To try that mode, use the --quality 10 option *without* using --vbr. The file needs to be sampled at 16 kHz. The idea of this mode is to be able to encode occasional music segments in a mostly-voice recording (e.g. Internet radio). So what are the opinions?

BTW, Speex source code is available here and there are Windows binaries on RareWares.
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john33
post Aug 30 2002, 10:43
Post #2


xcLame and OggDropXPd Developer


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Posts: 3765
Joined: 30-September 01
From: Bracknell, UK
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QUOTE (PatchWorKs @ Aug 30 2002, 09:42 AM)
I noticed that a 22 KHz, mono source is really comprensible, even for music.

Try to use Soundprobe's expander & normalization before compressing... the sound can benefit from them !!!

I think if you compare an ogg created using '-q -1', downmix to mono and resample to 22050, you will get output at approx 16kbps which sounds somewhat better than the speex equivalent. At least it does to my ears!! smile.gif


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John
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My compiles and utilities are at http://www.rarewares.org/
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