HOWL

HOWL

A boutique-inspired reverb and delay effect that blends ambience, saturation, feedback resonance, and self-oscillating textures into a single expressive processor.

Free
Developer
Platforms
macOSWindows
Release date

Previews

Three knobs. One toggle. From subtle thickening to bloodcurdling self-oscillation. Howl is a reverb and delay built like boutique analog gear. No presets, no tempo sync, no menus, no hidden pages. You turn it until it sounds right. The reverb goes from tight rooms to realistic halls to caves that never stop ringing. The delay bounces across the stereo field with a slight drift that keeps every repeat alive. Three stages of saturation add warmth, tape squash, and grit to the effect, while your dry signal stays completely untouched. Push Feedback past noon and Howl stops being an effect and becomes an instrument. The delay turns into a resonant oscillator that your playing feeds, and it snarls rather than clips. The filter sits inside the loop, so it reshapes every repeat a little more than the last. Guitar, bass, synths, vocals, drums, field recordings. Ambient, shoegaze, post-rock, drone, industrial, dub. This is not a hi-fi reverb. If you want clean, buy clean. Built in Rust with a 64-bit DSP engine.

What HOWL offers

Feedback Delay Network reverb with multi-stage modulated all pass diffusion - from intimate room to infinite cave.
Hermite-interpolated delay line - smooth, click-free time changes from 5 ms comb-filter territory out to 2 seconds.
Three-stage analog-modelled saturation.
2× internal oversampling on every saturation stage. No aliasing artifacts in generated harmonics.
Zero-allocation processing.
Parameter smoothing on every control.

What’s new

  • What's New in 1.0.2
  • Fixes:
  • Gamma color correction fix (Windows)
  • Stability improvements (Windows)
  • Promo overlay (all)
  • What's New in 1.0.1
  • Fixes:
  • Knobs no longer stick or snap back when the transport is stopped (Windows)
  • Filter toggle is now a single click-and-drag zone - no more missed flips (all)
  • Fixed stale parameter values shown after reopening a saved project (all)
  • Fixed DPI scaling bug causing incorrect window size in some DAWs (Windows)
1.0.2

FAQ

Reviews

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