Obsolete
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
The AudioContext method createWaveTable() is now obsolete; you should instead use the method createPeriodicWave(). It was the older method for creating a periodic waveform.
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https://developer.mozilla.org/en-US/docs/Web/API/AudioContext/createWaveTable