Lexicon PCM96 - Manual (Page 55)

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Tip: Shape will not have this effect if spread is at its minimum value. But
even then, it can make a difference. In this case, it affects reverb tim-
bre and density. Higher values of shape will be both darker and denser,
although the effect is subtle.
Shelf
This parameter effects all filter types. It allows a certain amount of unfiltered
audio to be combined with the filtered audio. This effectively lowers the
effect of the filter. Another way of looking at it is that it lessens the normal
filter slope of 12 dB per octave. Unlike the traditional biquad filter, the shelf
is effective for all filter forms.
Shift Semi
This parameter determines the amount of positive or negative pitch shift for
the shift. Expressed in semitones.
Signal Event Freq
Changes the rate of discreet signals from the signal generator. This only has
an effect when the signal type is set to sweep tones or pink click.
Signal Frequency
Changes the frequency of the signal generator sine wave. This only has an
effect when the signal type is set to sine wave.
Signal Type
Selects the type of signal to be created by the signal generator. The types of
signal are:
Sine Wave — When this is selected the signal frequency parameter is •
used to control frequency.
Sweep Up — 20Hz to 20KHz sweep. When this is selected the signal
•
rate parameter is used to control rate.
Sweep Down — 20Khz to 20Hz sweep. When this is selected the signal
•
rate parameter is used to control rate.
Pink Click — Broadband impulse. When this is selected the signal rate
•
parameter is used to control rate.
White Noise (correlated) — sends identical white noise to all outputs
•
White Noise (decorrelated) — sends decorrelated white noise to all out- •
puts.
Pink Noise (correlated) — sends identical pink noise to all outputs
•
Pink Noise (decorrelated) — sends decorrelated pink noise to all out- •
puts.
Smart Shift
This tells the shifter to use smart (content-based) pitch shift or blind shift.
In most cases, ‘smart’ is the better choice.
Spread (Early Spread)
The spread parameter is closely tied to the Shape parameter. Spread is a win-
dow of time during which a signal is injected into the reverb. Shape controls
just how the signal is injected during this window.
Tail width
This parameter is present in all stereo reverbs and rooms. The reverb tail (all