Ableton/Live/UG/29 Audio Effect Reference/23 Hybrid Reverb/04 Algorithmic Reverb Engine
- The algorithmic engine is built only from digital delay lines, without samples. Its controls sit right of the Blend knob and change with the Algorithm chooser.
- Algorithms: Dark Hall, Quartz, Shimmer, Tides, Prism. All have:
- Decay — time for the tail to fall by 60 dB
- Size — size of the virtual room
- Delay — extra predelay in ms for this engine
- Freeze — stops input and makes the decay infinite so the reverb sustains; Freeze In keeps adding input to the frozen sound, building it up
- A smooth, classic hall for medium to long halls.
- Damping — high-frequency filtering; higher is darker
- Mod — movement in the tail; more gives chorusing and fewer resonances
- Shape — from small and resonant to large and diffuse
- Bass X — crossover for the low end of the tail; Bass Mult scales its decay time
- Long decays with a very small Size give metallic, gong-like resonances.
- A hall-like reverb with audible echoes in the tail and clear early reflections; suits voices, drums, transient material and echo effects.
- Damping — high-frequency filtering; higher is darker
- Lo Damp — low-frequency filtering; higher is brighter
- Mod — movement in the tail
- Diffusion — density of the tail
- Distance — how far away the reflections are; closer is denser, farther spaces the echoes out
- Dense diffuse delays with a pitch shifter in the feedback; tails rise or fall in pitch. Low diffusion is a plain delay, high diffusion a lush reverb.
- Damping — high-frequency filtering
- Mod — movement in the tail
- Pitch — pitch shift in the feedback, in semitones
- Diffusion — density; below 10% gives dub-style delays, good on drums
- Shimmer — amount of pitch-shifted signal; 100% on melodic material gives harmonies
- Here Size sets the spacing of echoes on percussive material.
- A smooth reverb whose output is modulated by a multiband filter, giving rippling bands.
- Damping — high-frequency filtering
- Wave — modulation shape from noise (0%) through sine (50%) to square (100%)
- Tide — strength of the texture
- Phase — left/right offset; 180° is fully opposite
- Rate — modulation rate in beat divisions, with triplet, 16th and dotted variations
- A bright, clearly artificial diffuse reverb based on spectrally flat "velvet" noise. It adds depth without getting in the way, suits short non-linear decays on drums, and gives a clean digital sound on longer decays.
- Low Mult and High Mult — scale the decay of the low and high parts of the tail
- X over — crossover between those parts
- Small Decay and Size give a classic 1980s gated snare reverb.