[Speex-dev] Fixed Point Perfomance

[Jim Crichton]

Ilya,

Speex has been implemented on many different fixed point platforms, and the 
MIPs requirement will be very different depending on the architecture of the 
platform and the quality of the C compiler.  10 mflops could translate to 15 
MIPs, or to 150 MIPs.  There is no general answer.  If there is a specific 
part that you are considering, then ask about user experiences with that 
part.

Memory requirements can be a bigger issue than MIPs, and this will vary also 
depending on the modes that you wish to use.  You can look through the Speex 
mailing list archive for more information.

- Jim


----- Original Message ----- 
From: "Ilya" <ilch1 at netzero.net>
To: <speex-dev at xiph.org>
Sent: Thursday, September 18, 2008 8:48 AM
Subject: [Speex-dev] Fixed Point Perfomance


> Hello Developers,
>
> I am considering using SPEEX on an embedded processor that does not have a 
> floating point unit.  Does anybody have a SPEEX performance 
> characterization on a fixed point processor?  More specifically, I am 
> interested in knowing how the MFLOPS values from Table 9.2 in the manual 
> translate to fixed-point instructions when SPEEX is compiled with 
> enable-fixed-point option.
>
> Any help will be greatly appreciated.
>
> Thanks,
> Ilya
>
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