Old 23rd July 2011, 10:18   #1
efoks
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AAC+ playback only 22KHz???

Hi, Just updated winamp to 5.621 and it only plays have the KHz ofthe original stream...???

I.e. original stream:
24kbps 44.1KHz stereo

winamp will recreate it as
24kbps 22KHz???

Same at 64kbps, won't play it in 44.1KHz

What the hell??? the quality drops dramatically!!! Is that the problem of updated fraunhofer codec or is it Winamp's way of telling - you need to upgrade to PRO to have better quality aac+?

If it's the later then I'll say - f**k off, it was a pleasure!

e.
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Old 23rd July 2011, 16:36   #2
kzuse
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I think it is a bug in the new Fraunhofer decoder. It doesn't recognize the presence of the SBR information (=spectral band replication, which is basically the thing that makes the difference between normal AAC and HE-AAC/aacPlus).

I think they'll fix it. I personally also stick to the old version for now.
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Old 23rd July 2011, 17:23   #3
efoks
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Thanks Kzuse,

I've rolled back to 5.581...
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Old 23rd July 2011, 20:53   #4
Benski
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Can you upload a test file? We can't reproduce the issue here.

Besides not detecting the SBR, another possibility: The old CT decoder would upsample automatically when the samplerate was low. It wasn't actually adding quality, it was just (sometimes) easier for the soundcard to deal with it. This certainly might be going on with 24kbps. but 64kbps should be playing back at 44.1khz regardless.
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