Speex dev - Apr 2010 - Default bitrate

Saju Palayur <saju_pa at hotmail.com> writes:
> Hi 
>
>  
>
> When we run the profiler these 3 functions take more than 8500 cycles.
>
>  
>
> split_cb_search_shape_sign_N1() 22782
> pitch_search_3tap() 19208
> lpc_to_lsp() 16007
>  
> So can I configure these in a different way so it takes less cycles.
I am not familiar with the code, so I can't say. I was trying to teach
you how to optimize, not give you an optimization.

--Randy
> I do not need very high sound quality
>  
> Thanks for your time
>
> Warm Regards 
> Saju
>
>  > From: yates at ieee.org
>> To: saju_pa at hotmail.com
>> CC: speex-dev at xiph.org
>> Subject: Re: [Speex-dev] Speex on TI DSP 5505
>> Date: Mon, 29 Mar 2010 19:55:55 -0400
>> 
>> Saju Palayur <saju_pa at hotmail.com> writes:
>> 
>> > Hi
>> >
>> > 
>> >
>> > We have ported the Narrow band 8 Khz Speex encoder and decoder on
to TI DSP 5505
>> >
>> > 
>> >
>> > To compress 20ms of 16 bit audio sampled at 8Khz it takes 4.2ms.
>> >
>> > Is there any optimizations I can do to make it run faster.
>> 
>> The first thing to do would be to profile the code (I assume you're
>> using CCS) and see where the most time is being spent. 
>> 
>> --Randy
>> 
>> > 
>> >
>> > Thanks for yor time
>> >
>> > 
>> >
>> > Regards
>> >
>> > Saju
>> >
>> > 
>> > _______________________________________________
>> > Speex-dev mailing list
>> > Speex-dev at xiph.org
>> > http://lists.xiph.org/mailman/listinfo/speex-dev
>> 
>> -- 
>> Randy Yates % "She tells me that she likes me very much,
>> Digital Signal Labs % but when I try to touch, she makes it
>> mailto://yates at ieee.org % all too clear."
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ELO
>  		 	   		  
-- 
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The speexenc.c example has a "--bitrate n" command line option, but I
can't find in the Speex Codec manual where the default bitrate is
defined. 

What is the default bitrate for 16 kHz mono? 

Speex 1.2Beta3
-- 
Randy Yates                      % "My Shangri-la has gone away, fading
like
Digital Signal Labs              %  the Beatles on 'Hey Jude'" 
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Randy Yates <yates at ieee.org> writes:
> The speexenc.c example has a "--bitrate n" command line option,
but I
> can't find in the Speex Codec manual where the default bitrate is
> defined. 
>
> What is the default bitrate for 16 kHz mono? 
Also here are a few other bitrate-related questions:

  1. Does average bitrate mode ==> variable bitrate mode?

  2. If average bitrate mode is enabled, then is (plain) bitrate
  ignored?

  3. If variable (non-average) bitrate mode is enabled, is plain bitrate
  still used? If so, how?
> Speex 1.2Beta3
-- 
Randy Yates                      % "The dreamer, the unwoken fool - 
Digital Signal Labs              %  in dreams, no pain will kiss the
brow..."
mailto://yates at ieee.org          %  
http://www.digitalsignallabs.com % 'Eldorado Overture', *Eldorado*, ELO