Lexicon PCM 91, Руководство пользователя

Страница: 72 / 163

Lexicon
3-8
PCM 91 User Guide
The Dual Reverb
Algorithms
The Dual Reverbs use four reverb algorithms to produce six Dual Mono, and four
Cascade effects. Each of the algorithms and its associated parameter matrix
is presented in this section.
The Reverb Blocks
This algorithm (described earlier and repeated here for completeness) produces
an even, relatively dimensionless reverberation, with little change in color as the
sound decays. The initial diffusion is similar to the Concert Hall algorithm, but the
sense of size and space is much less obvious. This characteristic, along with low
color in the decay tail, makes Chamber useful on a wide range of program
material. It is especially useful on spoken voice, giving a noticeable increase in
loudness with very low color.
Chamber
This algorithm allows you to vary the slope of the initial portion of the reverb
envelope. The slope can decay, remain level, or rise over a variable time interval.
When the time interval is up, the reverberation cuts off abruptly. The resulting
effect is similar to a gate, but is not at all dependent on the level or complexity
of the input signal. Slopes are adjustable over a negative, even, or positive slope.
Positive slopes create inverse effects, while more even slopes create gated
effects. Negative slope values have rather natural reverb tails.
Inverse