[Speex-dev] Development on DSP 6711

Jean-Marc Valin jean-marc.valin at usherbrooke.ca
Wed Sep 15 17:30:31 PDT 2004

Hi Muhammad,

Did you define FIXED_POINT when compiling the code? Otherwise, you'll be
using floating point emulation which is usually very slow.


On jeu, 2004-09-09 at 10:39 +0500, Muhammad Saad Saleem wrote:
> Dear developers,
>          I am a research associate in Al-Khwarzimi Institute of Computer
>          Science. I am working on TI 6711 Evaluation Board. I want to
>          implement audio compression algorithm on this board. I have
>          already implemented sub-band compression on this board. But the
>          resultant quality is really poor. Therefore, I want to use
>          speex open source library for compression. The main problem
>          which I am facing is that when I compress a 160 samples block,
>          it takes almost 40 million cycles on contrary to my sub-band
>          algorithm which only takes 3 million cycles. So my input buffer
>          overflow as the data is slowly compressed. If you have
>          experienced any such problem, then please let me know that what
>          did you do to avoid it. I will be grateful to you.
> -----
> Best Regards
> Muhammad Saad Saleem
> Research Associate
> University of Engineering and Technology, Lahore
> http://www.uet.edu.pk/saad

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