[LAU] [OT] guitar pickups: how to get separate signals for each string?

[fons at kokkinizita.net]

On Wed, Feb 02, 2011 at 10:15:45AM +0100, Renato Budinich wrote:

> but maybe he's not doing it right... who knows... to the DSP-gurus:
> shouldn't this[1] be fairly easy and give good results?
> 
> [1]: subtracting from the signal of a string the signal of nearby strings,
> multiplied by appropiate coefficient

Depends. You have to start with a reasonably low crosstalk, otherwise
combining the signals to separate the strings requires too much gain
and will be very sensitive to small variations in the crosstalk.

Another potential problem with this is that the vibration of a string
is the sum of two components: a vibration to/from the pickup, and one
orthogonal to that direction. These two modes could very well have
different crosstalk coefficients. If that's the case, separation of
the signals becomes almost impossible.

Ciao,

-- 
FA

There are three of them, and Alleline.