Re: DSP Device for Guitar Pedal Effect

On Mon, 26 Oct 2009 16:07:40 +0000, ChrisQ wrote:

Fred wrote:


I need to look at the different ways possible to do this, and hardware
to implement it.

Cordic looks interesting, I still need to figure out how to get the ADC
and DAC conversion done and the chip to run the function,

I also need to be able to have one user variable parameter a setting
knob that the the micro-controller would track in real time.along with
the input signal.

The other point being avoidance of floating point and do it in fixed
point if at all possible. If you use a cheap micro, fp will be too much
of a performance hog with many C libraries, not to mention the amount of
code space it takes up...

C?!?

This is a job for assembly, unless you want an obnoxiously big,
expensive, and power hungry part in there.

C isn't a good fit for fast DSP algorithms. Unless you luck out with a
very wise compiler you're best hand-fitting the code to the application.

--
www.wescottdesign.com
.

Relevant Pages

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