[Speex-dev] how to fix high freq noise?
jean-marc.valin at usherbrooke.ca
Wed Jan 7 20:29:52 PST 2009
What version did you use. Some older releases had encoder-side issues
with some times, but that should be fixed now.
Jason Hennigar a écrit :
> Hi Masakazu,
> I have reproduced the Speex high frequency noise issue on a Blackfin 537
> by sending 'silence' into the Speex fixed point encoder. By recording
> the Speex decoder output and plotting the spectrum using Audacity the
> following two frequencies.
> 1596Hz at -31.3dB
> 3200Hz at -48dB
> These two frequencies are present in both Narrow Band and Wide Band
> modes. I've tried a number of different configurations and these two
> frequencies are always present (quality set to 10 or default, the
> complexity set to default, perceptual enhancement turned on or off). I
> have not determined how to correct this problem but wanted to provide
> additional information.
> Speex-dev mailing list
> Speex-dev at xiph.org
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