[Speex-dev] speex on Dell Axim X51v

Luca De Cicco ldecicco at gmail.com
Mon Aug 21 03:07:17 PDT 2006

Hi there,
  i'm not into speex internals but i feel that your problems are due to the
that speex doesn't do yet fixed point operations and it seems that you lack
FPU on your PDA. So i would expect a big boost in performances when the
point version of Speex will be out.


On 8/20/06, Sunil <dualmax88 at yahoo.com> wrote:
> Hi,
> Sorry to be posting about a subject that may have already been answered.
> If so, please point me in the right direction.
> I'm developing a dictation application on the Dell Axim (Windows Mobile
> 5.0 Pocket PC). A key requirement of the application is the best possible
> sampling rate as the audio goes into a speech reco system. So, I've set up
> my wrapper around libspeex to capture audio (1 channel, 22050Hz, 16
> bits/sample) in blocks of the frame size. However, the encoder lags
> significantly - typically upwards of 2000 frames, at complexity <= 1 and
> quality <= 3. I've a
> On the decode side, the decoder is not able to do real time at these
> sampling rates (16kHz, 22kHz and 32kHz). The only sampling rate that seems
> to work at real time is 8kHz for decode. However, encode at 8kHz is still
> nowhere near real time.
> Is there anything I can do to get to the higher sampling rates and real
> time? Or is this just not possible?
> FWIW, the basic app uses MFC and the encode and decode are done in
> separate threads.
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