Ableton Live - 5.0 Instruction Manual download pdf (Page 271)

18.21. REVERB 269

18.21.4 Diffusion Network

The Diffusion network creates the reverberant tail that follows the early reections. The

decay time control adjusts the time required for this tail to drop to 1/1000th (-60 dB) of its

initial amplitude.

High and low shelving lters provide frequency-dependent reverberation decay. The high-

frequency decay models the absorption of sound energy due to air, walls and other materials

in the room (people, carpeting and so forth). The low shelf provides a thinner decay. Each

lter may be turned off to save CPU consumption.

The Freeze control freezes the diffuse response of the input sound. When on, the reverber-

ation will sustain almost endlessly. Cut modies Freeze by preventing the input signal from

adding to the frozen reverberation; when off, the input signal will contribute to the diffused

amplitude. Flat bypasses the high and low shelf lters when freeze is on. If Flat is off, the

frozen reverberation will lose energy in the attenuated frequency bands, depending on the

state of the high and low shelving lters.

The Echo Density and Scale parameters provide additional control over the diffusion's den-

sity and coarseness, and, when the room size is extremely small, have a large impact on the

coloration contributed by the diffusion.

The Chorus section adds a little modulation and motion to the diffusion. Like the Spin

section, you can control the modulation frequency and amplitude, or turn it off.

18.21.5 Output

At the reverb output, you can adjust the effect's overall Dry/Wet mix, and vary the amplitude

of reections and diffusion with the Reect Level and Diffuse Level controls.

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Ableton Live - 5.0 Instruction Manual Page 271