preprocessor performance (was Re: [speex-dev] Memory leak in denoiser + a few questions)

[Steve Kann]

Jean-Marc Valin wrote:

>If you set the denoiser to "on" and the VAD to "off", what difference
>does it make in CPU time?
>

<p>Same program, running on Athlon XP 1700+:

Test 1, using VAD, but AGC, denoise off:

tevek at canarsie:~/work/hms/app_conference $ time ./vad_test 
/tmp/demo-instruct.sw 5
reading from /tmp/demo-instruct.sw, repeating 5 times
read 537760 samples
beginning pass
beginning pass
beginning pass
beginning pass
beginning pass
done.
                                                                                

real    0m4.970s
user    0m4.628s
sys     0m0.014s

<p>Test 2, using denoise only:

tevek at canarsie:~/work/hms/app_conference $ time ./vad_test 
/tmp/demo-instruct.sw 5
reading from /tmp/demo-instruct.sw, repeating 5 times
read 537760 samples
beginning pass
beginning pass
beginning pass
beginning pass
beginning pass
done.
 
real    0m5.359s
user    0m4.301s
sys     0m0.024s

<p>====================

So, it doesn't seem to make much difference.

I also ran the code, unoptimized, with oprofile.  I'll send results from 
that to you separately.

-SteveK

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