Wavetables

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Wavetable synthesis is a form of synthesis that makes use of a waveform as its source rather than an algorithmically-generated waveform. A wavetable can be as simple as a single-cycle waveform or (more commonly) a series of single-cycle waveforms that are encapsulated in an audio file (often .wav format).

Wavetables are often 2048 samples long or a multiple of 2048 samples. In order to have click-free wavetables, the wavetable should begin and end with samples whose amplitude is 0. The single-cycle waveforms should also begin and end with 0.

A note about the word sample: when discussing wavetables, the word sample refers to the individual numbers in the audio file. When you see a drawing of a waveform,the drawing is really a graph of those sample values over time.

Sheets of Sound Single Cycle waveform creator - this online editor is a great tool for creating single cycle waveforms that can be used in your wavetables.