Abstract: A musical instrument employing probabilistic wavetable-modification method of producing musical sound. A randomly initialized wavetable which is periodically accessed to provide an output signal which determines the musical sound. The output signal from the wavetable is probabilistically modified and stored back into the wavetable as modified data. The modified data, after a delay, is accessed from the wavetable and thereby becomes a new output signal. This process is periodically repeated whereby each new output signal is stored (after possibly being modified) back into the wavetable to produce rich and natural musical sound.

Abstract: A musical instrument for producing musical sound including a wavetable for storing a plurality of samples in wavetable locations. An address generator addresses wavetable locations for selecting stored samples to provide audio output signals and for selecting stored samples to be modified and restored. New addresses for specifying wavetable locations are provided employing a modification operation independent from an output operation.