Wavetable synthesis is a technique used in certain digital music
synthesizers to produce natural tone-like sounds. The sound of an existing instrument (a single note) is
sampled and parsed into a circular sequence of samples or wavetables, each having one period or cycle per wave; a set of wavetables with user specified
harmonic content can also be
generated mathematically. Upon playback, these wavetables are used to fetch samples (table-lookup) in the same manner as in a
Numerically-controlled oscillator to produce a waveform. However, in wavetable synthesis, the output waveform is not normally static and evolves slowly in time as one wavetable is
mixed with another, creating a changing waveform. Looping occurs when the wavetable evolution is halted, slowed, or reversed in time.
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