Oscillator Lab

About this instrument

Validating PolyBLEP Anti-Aliasing & Stereo Phase Offset

Left Channel (Ref)

Right Channel (Mod)

Zoom: 1x

Shape Selector

Sine Triangle Square Sawtooth Noise

DSP Settings

HQ Mode (PolyBLEP)

Uncheck to see aliasing (steps). Check to see band-limiting (ripples).

Stereo Imaging

Phase Offset 0° Invert Right Phase

Monitoring

Frequency 220 Hz Output Mix Stereo

0=Stereo, 1=Mono Sum

Zoom Level

Test Case:

Select "Saw". Zoom in to max.
Toggle "HQ" off. Note the sharp, stepped edge (aliasing).
Toggle "HQ" on. Note the tiny ripple (Gibbs phenomenon) and smooth slope.
Set Phase to 180°, Invert OFF, Mix to Mono. Result: Silence.