Speex dev - Jun 2009 - Resampler saturation

Hi Jean-Marc,
 
I use the resampler to convert various sampling frequencies to 48 kHz on my
Blackfin platform (fixed-point)

48K -> 16K speex -> 48K chain does not sound very good compared to plain
16K.
But the main issue is when processing loud signals, I have truncation (and not
clipping/saturation)
I could hear it and see it with various music and speech messages. See
example.png.

I also ran a test with a chirp signal -> see chirp-resample.png.

The original signal amplitude is 0.8 or 26214.
After 2x upsampling, the peak level is about 30000 -> 114 % !!!
(plus the output is kinda weird)

Is this a bug ? Is it possible to fix it ?
(I use version speex 1.2beta2, because newer versions just don't work on my
platform)

Best regards.

-- 
St?phane LESAGE
ATEIS International
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Quoting Stephane Lesage <stephane.lesage at
ateis-international.com>:
> Is this a bug ? Is it possible to fix it ?
> (I use version speex 1.2beta2, because newer versions just don't work
on my
> platform)
This is probable the cause. 1.2beta2 was the first release to include the
resampler and it had many bugs. I suggest trying to get 1.2rc1 (or latest git)
working.

   Jean-Marc