[sdiy] Re: [Fpga-synth] Hello! and an Idea!

Eric Brombaugh ebrombaugh at earthlink.net
Tue Sep 5 21:19:52 CEST 2006


Jeff Farr wrote:
> 
> This is all leading me to another technique.  Start with how it's done
> on a known system and then assess how that system can be implemented
> with the hardware I've got.  At the moment I've only got some info on
> "BruteFIR" which is an open source convolution engine, which I'm not
> sure shares enough in common to be really useful.  Research time.

Good idea - google around and read up on some papers too.

> Subthought:  If someone was going to implement this with DSP's would
> they have access to more multipliers or would they use some trickery?

That's what was bugging me, and the answer must be trickery. A PC can 
compute math pretty quick, but not gigaflops, so how are the convolution 
plugins working real-time?

As I mentioned earlier, I believe there are some frequency domain 
approaches that reduce the amount of math required.

Eric



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