saturation

Oversampling prevents aliasing by upsampling the audio signal before applying nonlinear waveshaping, then downsampling afterward. This allows the harmonics added by tape, tube, or transistor saturation models to retain warmth without generating harsh digital artifacts.

Tube, tape, and transistor saturation are modular waveshaping models that apply different nonlinear transfer functions to audio signals. They generate unique harmonic profiles, enabling flexible tonal shaping for mixing buses, mastering chains, and guitar pedals.

Audio saturation requires DC blocking to manage DC offsets and maintain stability, alongside dry/wet mixing controls. These features ensure that the drive applied by the nonlinear transfer functions preserves dynamics and prevents unwanted low-frequency drift.

You can use oversampling and adjustable drive for mastering chain saturation to achieve a warm, musical tone. By applying nonlinear waveshapers with anti-aliasing, you add harmonics while preserving dynamics and maintaining stable level handling.

Nonlinear waveshaping causes aliasing artifacts because applying transfer functions to audio generates harmonics above the Nyquist limit. Oversampling is required to shift these artifacts out of the audible spectrum during processing before filtering them out.