DSP Technology

Some blog articles about DSP technology used in our products.

On alias free oscillators – the holy grail of wavetable synthesis implemented in Vaporizer2

Being able to synthesize any arbitrary waveform without aliasing – audible or not – is considered the holy grail of wavetable synthesis. But what does aliasing mean in that context?

If you are familiar with the Nyquist Theorem (Wikipedia article), then you know that in digital audio synthesis we can successfully sample and play back frequency components up to one-half the sampling frequency (fs). Aliasing is the term used to describe what happens when we try to record and play back frequencies higher than one-half the sampling rate. In that case frequencies above Nyquist fold over into the...