RE: [oc] new project...MP3 (audio) core?

["Dautel, Rob" <Dautel@AllAmerican.com>]

Hi all,

Thanks for the feedback. I like the idea of the data flow engine as well. I
have also done a data flow engine before and while I could not use much of
that code as it belongs to a company, I've been through the process and am
familiar with some of what's needed. The question now is would such a
project be duplicating any other core project such as some in the DSP group
or the audio synthesizer core I read about. If not, it sounds fun. comments?

-rob.

> -----Original Message-----
> From: Rudolf Usselmann [mailto:rudi@asics.ws]
> Sent: Wednesday, July 18, 2001 7:13 PM
> To: cores@opencores.org
> Subject: Re: [oc] new project...MP3 (audio) core?
> 
> 
> on 7/19/01 0:44, lior.shtram@flextronicssemi.com at
> lior.shtram@flextronicssemi.com wrote:
> 
> > Hi All,
> > 
> > It is true about the patents that only encoders are charged 
> with royalties and
> > decoders you can make for free. Thinking about this block 
> for a long time, we
> > got to think that a hardware approach should not give such 
> a good benefit in
> > any respect (size, power, speed??, flexibility) but if you 
> think otherwise I
> > would like to hear it. Also it would be nice to support the 
> other standards
> > such as Ogg (which is the free one).
> > 
> > I also wanted to add that there is a nice academic work 
> that was available
> > over the net with VHDL code on implementing a decoder for 
> MP3 half CPU half
> > DSP based - take a look - don't remember where it is.
> > 
> > Lior
> 
> I think what we really should do is a data flow engine that
> is micro-programmable and can do MP3 and OGG (?) and perhaps
> other specific audio encoding algorithms.
> 
> A data flow engine is a part where you examine the operations
> you will have to perform and concentrate on implementing them
> as efficient as possible. The control logic for the data path
> (typically a hard coded state machine) is replaced with a micro-
> programmable state machine. Another way of looking at is to think
> of a heavily stripped down DSP ...
> 
> Implementing a data flow engine could reduce the power
> enormously and should be much smaller than truly general
> purpose hardware such as a CPU. And of course it should
> be able to run much faster as well.
> 
> Cheers !
> -- 
> rudi
> 
> 
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