Audio platform based on general MIDI sound generator.
We built platform for musical therapeutic instruments for people with special needs. The system is a biofeedback stand alone system that measures the grip force as an input and produces sound as an output.
The system includes display and control switches for browsing the different programs. The output sound is correlated with the input according to different predefined algorithms. The system is based on two chips and grip force sensors. The core of the system is a micro controller “TI MSP430”. The sounds are general midi sounds produced by a standard sound generating chip.
Design Considerations Noise:
The sound of the audio should be clean of noise which requires special attention in board design and in power supply design.
Memory size: The memory in the system is limited to 8Kbyte flash memory. Special care was given to optimizing the code. Real time sampling: The sampling of the inputs should happen at fixed times regardless of any parallel activity that the microcontroller is occupied with.
Product life time: The used components need to serve the project for at least 5 years and preferably 10 years.
The design was executed for AnalogTone.
