[speex-dev] --dtx alone does nothing?
David Willmore
davidwillmore at iamanidiot.com
Wed Jan 15 13:59:05 PST 2003
> > One last thing. ;) Is there much meaning to complexity values >3? From
> > a quick scan of the code, it looks like there are >1 and >2 comparisons,
> > but not much more than that. I want to run my test over all meaningful
> > values of complexity and it takes a long time to do a run...
>
> For voice, the difference between complexity 4 and 10 is very small
> (<0.1 dB in SNR). However, there are cases (e.g. DTMF and other tones)
> where there's still a quality gain past complexity 4.
Okay, so it does make a difference there. Interesting.
Are all values of complexity meaningful or just a select few? Is it like
--quality for narrow coding?
The test script is getting bigger and bigger. :) I burned three CDs of
audio last night to listen to. Now to head over to the stereo...
Oh, on a related note, my source material--Doug Stanhope/Die Laughing--
turns out *not to be copyrighted*. There is no copyright notice on the
media nor on the CD case/liner notes. As a matter of fact, it says:
"Put this CD on every music sharing site you can find. Burn copies for your friends."
So, looks like it's a good source of material for testing. :) Anyone
want a copy? I can send someone with some web space a FLAC file if they
want to make it available to all speex people as a 'corpus'. Never hurts
to have a common set of material to work with. And, it's a good listen
if you are into horribly offensive comedians. :)
Cheers,
David
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