Khatzotzra’ash – an Augmented Trumpet
a hybrid electro-acoustic instrument design
by: Yuval Adler
The goal of this instrument design is to allow a trumpet player to use his expressive technique to drive virtual instruments in a live setting. This is done by sampling the buzz of the mouthpiece and using it to drive physical models of said instruments, thus re-introducing the essential “noise” disregarded by contemporary MIDI controllers for sound synthesis.
The most difficult technical part of this design would be to obtain a high quality signal from the mouthpiece buzz on as wide a dynamic range as possible.
The challenges involved are mostly (but not limited to):
- obtaining a high quality signal of the lip-buzz
- mounting virtual instrument controls on the trumpet in a non-cumbersome way
- balancing flexibility and simplicity for virtual instrument control interface
- programing the virtual instruments to work with the buzz signal’s unique characteristics
– Existing “E-trumpets” – mostly wind controlled MIDI interfaces.
– Trumpet pickup mute for suppressing acoustic sound, and using the muted sound input to generate an unmuted sounding audio output.
– Plastic trumpet for lighter weight, to balance added instrumentation to final product and reduce signal feedback from trumpet body back to mouthpiece.
– Plastic flugelhorn, with variable lead pipe for easy addition of mouthpiece pick-up.
– Acoustics background for brass instruments.
– Physical modelling software kits.
– Trumpet player and music technology researcher, Dexter Morrill (more MIDI-centric ideas).
– Good use of audio-stream input signals to drive digital synthesis in similar hybrid electro-acoustic instrument.
– Good use of existing acquired skill utilized with familiar interface for electric musical instrument.
– Two hybrid electro-acoustic trumpet designs, involving some form of audio effect addition to the trumpet’s acoustic sound, with each representing a different point on the spectrum of interface complexity/simplicity.