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From: dijk~orldaccess.nl
Date: Sun, 01 Sep 96 13:49:59 GMT
Subject: RE: MIDI Harmonica

On 1-09-96 16:12, , john frazer wrote:

> Wim,
> There was some rumblings about a MIDI harmonica last year, but I don't
> think it was perfected. The term that comes to mind is "vaporware". How are
> you planning on changing the analog to digital?
I was at the music high school of Den Haag, The Netherlands last year. They have
electronic music department. Very interesting. This department can be divided in a
couple of groups. Computer Scoring Programs, Studio Equipment, MIDI Software
implementation and Divice Driver Programming and: MIDI CONTROLLERS. A Midi
Controller is an instrument that generates midi signals. The did build many midi
versions of common instruments like the flute, clarinet, saxophone, but also
developed very interesting new instrument. One of the tools they demonstrated to me
was a three dimensional 'pedal'. It could move up and down, left and right and
could be turned clockwise and anti clockwise. They were interested to develop a
MIDI harmonica.
They are fimiliar with a new type of air pressure sensor. It just calculates
constantly the air pressure which can be positive and negative. Its dynamic range
is very interesting and this sensor is allready used in saxophones and clarinets
with great success.
They also developed a analoge signal to MIDI signal convertor which can be
programmed by a APPLE or PC computer. By programming the convertor, one is able to
program the interpretation of the sensors analog signal. So its also possible to
play the midi harmonica as a chord instrument, normal chromatic, whole tone or
augmented triad chromatic, bass harmonica. Its all possible because of the
flexibility of the interface. Its just a matter of programming the interface.

Although it will never replace the mechanic harmonica, it can be a fantastic
instrument to study with. What about analysing your own solos? It's very easy to
record the MIDI data with Band-In-A-Box while playing a solo. One is able to print
the notes including the chordprogression. A great study and teach fascility.

All reactions are very welcome. I will have to find some sponsors for this project
and worldwide possitive reaction can be very helpful.


Wim Dijkgraaf
The Netherlands