Reference Manual

349 Live Audio Effect Reference
22.28 Reverb
The Reverb Effect.
22.28.1 Input Processing
The input signal passes first through high and low cut filters, whose X-Y controller allows chang-
ing the band’s center frequency (X-axis) and bandwidth (Y-axis). Either filter may be switched off
when not needed to save CPU power.
Predelay controls the delay time, in milliseconds, before the onset of the first early reflection. This
delays the reverberation relative to the input signal. One’s impression of the size of a real room
depends partly on this delay. Typical values for ”natural” sounds range from 1ms to 25ms.
22.28.2 Early Reflections
These are the earliest echoes that you hear after they bounce off a room’s walls, before the onset
of the diffused reverberation ”tail.” Their amplitude and distribution give an impression of the
room’s character.
The Shape control ”sculpts” the prominence of the early reflections, as well as their overlap with
the diffused sound. With small values, the reflections decay more gradually and the diffused
sound occurs sooner, leading to a larger overlap between these components. With large values,
the reflections decay more rapidly and the diffused onset occurs later. A higher value can some-
times improve the source’s intelligibility, while a lower value may give a smoother decay.