[Speex-dev] speex1.2-beta2 and noise suppression problem

[Piotr Domagalski]

Hi!

I'm using the newest (beta2) speex library on PocketPC (Windows
powered) and experiencing some problems with noise suppression
preprocessor turned on while encoding 44kHz files.

You can hear the example here: http://szalik.net/speex (this is a
44kHz, 16, mono file encoded in UWB mode)

I tried using speex cross-compiled with gcc (fixed point + arm4 asm)
and VS (just fixed point) and it sounds the same. There doesn't seem
to be any problem with 8 and 22kHz input files. Speex-1.2beta1 crashes
with all 44kHz input file and it's very hard to debug, because I'm
using .NET P/Invoke to call native DLL and the application just closes
down when it crashes.

As for the code, it's quite simple, the basic flow is as follows:

1. Init encoder, bits, set SPEEX_SET_SAMPLING_RATE
2. Init preprocessor state, set SPEEX_PREPROCESS_SET_DENOISE
3. Set quality/complexity
4. loop with: encode_stereo, preprocess, encode int

Any suggestions as to what I might be doing wrong? Or is it a bug?
Maybe something with the last fixed-point changes?

-- 
Piotr Domagalski