johnyradio
Member
i've read it happens during AC-- current that reverses direction every cycle.
But i've been told it happens even with a positive-only wave.
![sin_wavetable.png](https://legacy.earlham.edu/~tobeyfo/musictechnology/Images/sin_wavetable.png)
But i've been told it happens even with a positive-only wave.
![square-wave.png](https://musarratsyed.files.wordpress.com/2015/07/square-wave.png)
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