Audio distortion in Linux

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We used a CMedia USB device as audio input device when we did resample test
before.

MP3 player ---- line connect -- > USB --- 44khz ---> pjmedia app(the same
code as I published at google code)

---> PCMU stream ---> remote

All at local LAN.
We used wireshark to capture G.711 stream.
And then compare this file again the orignal file and the 8khz file
converted by audacity.
It seems some high frequency was cut by pjmedia resampling. the quality not
good as audacity resampling. If change to 8khz, don't do resample anymore,
audio signal showed by audacity was OK. Also we tried Realtek HD audio
input of dell desktop pc.

I think I need to use pjsua to test at windows again, don't use any audio
input device.

I will try at linux also.

regards,
Gang
On Thu, Mar 26, 2009 at 7:44 PM, Benny Prijono <bennylp at teluu.com> wrote:

> 2009/3/26 Gang Liu <gangban.lau at gmail.com>
>
>> I have centos 4 with gcc 3.
>> Where can I get nanotech44.wav ?
>>
>>
> It's just an arbitrary 44.1khz wav file that I use for testing. If you need
> one you can use this:
>
> http://trac.pjsip.org/repos/browser/pjproject/trunk/tests/pjsua/wavs/input.44.wav
>
>  -benny
>
>
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