[sdiy] Percussion MIDI controller - again

[Ian Fritz]

At 04:55 PM 3/28/2005, Paul Perry wrote:
>The idea of a triggered one-shot holding the input off for a certain time
>should overcome the reflection problem, but you might also beat the
>reflections in two other ways:
>
>1. if it is the air column in the pipe vibratign, stuff it with speaker
>padding (or a towel!) the tighter the better.
>
>2. if it is off the ends of the tube itself, you can cut a diagonal slice
>off each end (as long  a slice as possible, say a foot long) so that
>the 'end' of the tube is spread over a length, which causes the
>resonance to be dulled out. (you are giving the tube a lower Q!)

Good suggestions, both.

Another (similar) method would be to cut transverse slices of increasing 
depth progressing beyond the main tube length. Or drill a bunch of holes 
... anything to randomly and incoherently scatter the traveling wave.