Antialiasing a variable-angle sawtooth (in: DSP and Plugin Devel…)

By: ricard
31 Jan 23:13

Starting with a traditional digital triangle/square/sawtooth oscillator that performs antialiasing with BLEPs (sawtooth and square) and BLAMPs (triangle), I’m seeking to add shape modulation to the sawtooth wave, so that the angle of the ramp can be varied, i.e. instead of a recurring ramp there is a flat section before the ramp starts and then it ramps upwards to the reset point when the cycle restarts.

My question is how to properly antialias this. I’m aware that a BLEP is used when the trivi…

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