[sdiy] Re: diodes/LDR

[Tom May]

harrybissell at prodigy.net writes:

> This is correct. You need to say what is acceptable performance. My
> experience with guitar is that NO system is fast enough.  Probably the fastest method is used by the AXON 'neural net' converter.  They basically use the impulse of the pick hitting a guitar string to guess
> the length of the string (therefore the pitch)...then follow this with
> a true conversion of the frequency.

The axon uses the arrival times of the wave travelling from pick to a
pickup in or near the bridge, and the wave travelling from pick to
fret and bouncing back to the pickup, to guess the length of the
string and the position of the pick.  See US patent 5717155.

Tom.