[Speex-dev] speex 1.2beta1 encoding/decoding clicking noise on WM2003

[Jean-Marc Valin]

Can you post the input and output file on the web and specify what
options you're using (use speexenc/speexdec, *not* your own code).

	Jean-Marc

Yanxin Cui a écrit :
> Would it help if I scale the input wav data before encoding to spx?
> One interesting thing is if I encode the same wav file to spx(or
> decode the same spx file to wav ) on Windows platform, then there is
> no such big clicking noise, samething is true if I use floating_point
> speex library to encode/decode on WM2003. Problem happens only on
> WM2003 using FIXED_POINT library.
> 
> Thanks
> 
> Yanxin
> 
> 
> ----- Original Message ----- From: "Jean-Marc Valin"
> <jean-marc.valin at usherbrooke.ca> To: <ycui at wmsvision.com> Cc:
> <speex-dev at xiph.org> Sent: Tuesday, December 05, 2006 4:53 PM 
> Subject: Re: [Speex-dev] speex 1.2beta1 encoding/decoding clicking
> noise on WM2003
> 
> 
>> Check that the recording level isn't too high. Samples should never
>>  reach saturation (+-32767) and should generally be less than 16384
>> to have good results.
>> 
>> Jean-Marc
>> 
>> Yanxin Cui a écrit :
>>> I am running speex 1.2beta1 on WM2003 using FIXED_POINT option, I
>>> got big clicking noise during encoding or decoding randomly, I
>>> got more noise if I spoke louder or made the MIC sensitivity
>>> higher, for example, when I encode the wav file to spx file, the
>>> original saved wav file does not have such noise, the noise is
>>> added only after it's converted to spx format. The floating point
>>> version of libspeex library does not give me such noise(but runs
>>> slow of course). Any suggestions?
>>> 
>>> Thanks a lot!
>>> 
>>> Yanxin
>>> 
>>> 
>>> ------------------------------------------------------------------------
>>> 
>>> 
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>> 
>> 
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>>