Speex dev - Jan 2005 - Fixed Point Speex in Microchip's PIC and Motorola's

Hmmm.... it's a shame.... what are the minimum requirements for Fixed 
Point Speex?

John Villar
Gerente de Proyectos
Computadores Flor Hard Soft 2058 C.A.
www.florhard.com



Alain wrote:
> Hi, no chance to run it on anything from Microchip, theyr best 
> processor is 16 Mips 8 bits only. For what I have been readind on this 
> list for more than a year you need a lot more than that.
>
> Even theyr DSPic has a clck of only 25MHz, I don even understand why 
> they bother to make a DSP like that...
>
> John Villar escreveu:
>
>> Hello, does anyone knows how performs the fixed point version of 
>> Speex in "embedded" controllers? i'm referring to
PIC16F84 and
>> Motorola alike microcontrollers.
>>
>> _______________________________________________
>> Speex-dev mailing list
>> Speex-dev@xiph.org
>> http://lists.xiph.org/mailman/listinfo/speex-dev
>
>
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Le lundi 10 janvier 2005 ? 16:37 -0400, John Villar a ?crit
:
> Hmmm.... it's a shame.... what are the minimum requirements for Fixed 
> Point Speex?
That depends greatly on the settings used. To give an idea, I've been
able to encode+decode at 8 kbps on an ARM 144 MHz with (IIRC) ~60% CPU.
That was without any ARM-specific optimization or assembly. In general,
I would say that unless your chip can do a 16x16 multiply (with result
in 32 bits), it's not likely to be able to encode in real-time.

	Jean-Marc
> John Villar
> Gerente de Proyectos
> Computadores Flor Hard Soft 2058 C.A.
> www.florhard.com
> 
> 
> 
> Alain wrote:
> 
> > Hi, no chance to run it on anything from Microchip, theyr best 
> > processor is 16 Mips 8 bits only. For what I have been readind on this
> > list for more than a year you need a lot more than that.
> >
> > Even theyr DSPic has a clck of only 25MHz, I don even understand why 
> > they bother to make a DSP like that...
> >
> > John Villar escreveu:
> >
> >> Hello, does anyone knows how performs the fixed point version of 
> >> Speex in "embedded" controllers? i'm referring to
PIC16F84 and
> >> Motorola alike microcontrollers.
> >>
> >> _______________________________________________
> >> Speex-dev mailing list
> >> Speex-dev@xiph.org
> >> http://lists.xiph.org/mailman/listinfo/speex-dev
> >
> >
> _______________________________________________
> Speex-dev mailing list
> Speex-dev@xiph.org
> http://lists.xiph.org/mailman/listinfo/speex-dev
-- 
Jean-Marc Valin <Jean-Marc.Valin@USherbrooke.ca>
Universit? de Sherbrooke

On Mon, 2005-01-10 at 16:37 -0400, John Villar wrote:
> Hmmm.... it's a shame.... what are the minimum requirements for Fixed 
> Point Speex?
yes, really. Well, does 6.25 percents of your free beer plus all the
specs of the DSPic ....

no, really too heavy....

homo parapentus is born again
> John Villar
> Gerente de Proyectos
> Computadores Flor Hard Soft 2058 C.A.
> www.florhard.com
> 
> 
> 
> Alain wrote:
> 
> > Hi, no chance to run it on anything from Microchip, theyr best 
> > processor is 16 Mips 8 bits only. For what I have been readind on this
> > list for more than a year you need a lot more than that.
> >
> > Even theyr DSPic has a clck of only 25MHz, I don even understand why 
> > they bother to make a DSP like that...
> >
> > John Villar escreveu:
> >
> >> Hello, does anyone knows how performs the fixed point version of 
> >> Speex in "embedded" controllers? i'm referring to
PIC16F84 and
> >> Motorola alike microcontrollers.
> >>
> >> _______________________________________________
> >> Speex-dev mailing list
> >> Speex-dev@xiph.org
> >> http://lists.xiph.org/mailman/listinfo/speex-dev
> >
> >
> _______________________________________________
> Speex-dev mailing list
> Speex-dev@xiph.org
> http://lists.xiph.org/mailman/listinfo/speex-dev
--

Alain wrote:
>
>> Hi, no chance to run it on anything from Microchip, theyr best 
>> processor is 16 Mips 8 bits only. For what I have been readind on 
>> this list for more than a year you need a lot more than that.
>>
>> Even theyr DSPic has a clck of only 25MHz, I don even understand why 
>> they bother to make a DSP like that...
>>
>> John Villar escreveu:
>
Just 10 years ago most DSP chips clocked no higher than 25MHz and they 
found lots of application. You can build lots of things with a device 
like that. Think industrial applications, like motor control. Not 
everything requires a 6400 on steroids.

Regards,
Steve