HOW CAN COMB FILTERS BE USED TO SYNTHESIZE MUSICAL INSTRUMENTS ON A TMS320 DSP?

Music synthesis is the ability to create musical scores by synthesizing different musical instruments. Different methods of music synthesis include sampled sound synthesis (wavetable synthesis), FM synthesis, and instrument modeling. Sampled sound synthesis inherently requires significant amounts of memory to store instrument samples but results in extremely natural-sounding music. FM synthesizers are algorithmic and typically require little memory but result in unnatural-sounding music. Instrument models, based on analysis of the instrument being synthesized, often yield efficient implementations producing highly-natural sounds.

This document presents a DSP implementation of a model for synthesizing plucked strings, based on the Karplus Strong Plucked-String Synthesizer.

A system block diagram and several code listings are provided.

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