Musical controller for wind instrument using Max/MSP software and ATmega128.

The physical appearance of the proposed musical controller is composed of eight buttons, two potentiometers, and one for sensing resistor (FSR). The eight buttons each represent one octave scale. One of the two potentiometers selects kinds of instruments, while the other changes octave. FSR is for tremolo effects. For the real‐time play, we used a Max/MSP software. All recorded sounds were sampled and quantized as 44 100 Hz and 16‐bit, respectively. To use wavetable synthesis, samples of three to ten periods of the sounds were stored in each table. We also used an AVR board equipped with an ATMega128 8‐bit microcontroller. This microcontroller acts as an interface circuit between the sensor and PC as well as transmits data about notes and playing style to the Max/MSP by using a serial communication under RS‐232. Considering that the controller is a prototype of the stand‐alone musical instrument and is worked on the PC, the latency caused by RS‐232 communication can be easily solved embedding the program ...