spectral-processing

Noise Canvas is a sound design tool in which you paint sounds or effects directly into a spectrogram. Kind of like Photoshop but for sound. Free download for Mac, Windows and Linux.

C library for audio noise reduction and other spectral effects

A Spectral Filter VST built with Juce.

DtBlkFx for modern macOS — free 64-bit VST3 and AUv2 for Apple Silicon and Intel Macs, preserving the original FFT spectral effects, UI, presets, and sound.

⬡ SYNDRAVA ⬡ - Chaotic AI Drum Brain | Max for Live hybrid sampler/sequencer with touch surface, feedback chaos, and spectral AI processing

Extreme time-stretching and ambient texture — PaulStretch, spectral freeze, granular cloud, phase vocoder. Zero deps.

Drawable rainbow-leprechaun spectral filter, FFT damage processor, and dual stereo delay for REAPER