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tothl at tothl at
Mon Oct 6 08:53:12 EDT 1997

>From tothl Mon Oct  6 14:52:43 +0200 1997 remote from
Date: Mon, 6 Oct 1997 14:52:43 +0200 (MET DST)
From: Toth Laszlo <tothl at>
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To: music-dsp at
Subject: Re: Final Year Project
In-Reply-To: <332.199710061211 at>
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On Mon, 6 Oct 1997 J.Mcgee at wrote:

>  For my project I wish to build 
> a digital guitar effects unit, however, I do not know where to start, 
> and I was wondering if anyone could point me in the right direction.
>   Do I have to use a DSP, or is it possible to filter a guitar signal 
> using a PIC?  What sort of processor will I need for this project and 
> what would the clock frequency need to be running at?  I would also 
> appreciate it if anyone could send the addresses of any DSP Web pages.
The simplest effects like delay, chorus, flanger, phaser don't need too 
much computing power. More complex algorithms like a good reverb or 
pitch-shifting may need more "horsepower". I can't help with hadrware 
quetions, but I implemented most of the above algorithms on PC (not real 
time), so I can help with the algorithms.

Good luck,

*               Toth Laszlo                   *                              *
*        Hungarian Academy of Sciences        * "In our life there's if      *
*  Research Group on Artificial Intelligence  *  In our beliefs there's lie  *
*                                             *  In our business there's sin *
*     e-mail: tothl at           *  In our bodies there's die"  *
*       *                              *

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