3-35
Algorithms and Parameters
PCM 81
QUAD>HALL
The Quad>Hall algorithm, is a 4-voice pitch shifter in
series with the Concert Hall reverb. As in the multi-
voice algorithms, each voice has its own delay, level,
feedback, cross-feedback and panning controls. The
maximum delay time for each voice is 1.250
seconds.
In this algorithm, the reverb effect is fixed in position
following the pitch shifters, with a final Mix control
allowing control over the amount of reverb in the
processed sound. Quad>Hall is designed for creating
pitch effects, and is an obvious choice for creating
sequences of notes or chords, melody fragments, or
small amounts of pitch shift for doubling (or
quintupling) effects.
RefDly L
RefLvl L
RefDly R
RefLvl R
Low Rt Mid Rt
Size
Depth
Crossover
Rt HC
Spin Chorus Link
Definition
Diffusion
PreDelay Rvb Out
L In
V2 Pan
V2 Lvl
V1 Pan
Delay
V1 Lvl
12
V2 Fbk
V1 Fbk
V2 X-Fbk
V1 X-Fbk
V4 Pan
V3 Pan
V4 Lvl
V3 Lvl
V2 Pitch
V1 Pitch
34
Delay
V4 Pitch
V3 Pitch
V3 X-Fbk
V4 X-Fbk
V3 Fbk
V4 Fbk
Concert
Hall
FX
Mix
FX
Width
FX
Adjust
Rvb In
InPan
InLvl
R In
InPan
InLvl
Concert Hall
2 2.0 2.1 2.2 2.3 2.4 2.5
3 3.0 3.1 3.2 3.3 3.4
4 4.0 4.1 4.2 4.3 4.4
5 5.0 5.1 5.2 5.3 5.4
6 6.0 6.1 6.2 6.3 6.4
7 7.0 7.1 7.2 7.3 7.4
0 0.0 0.1 0.2 0.3 0.4
1.5
2.6
1 1.0 1.1 1.2 1.3 1.4
Controls Mix
2.7
LvlAdjust *InLvl/Pan FX Mix *ADJUST
Rvb Time Low Rt Mid Rt Crossover Rt HC Pre Delay *Ref Lvl/Dly
Rvb Design Size Diffusion Def Depth Spin Chorus Link *Rvb In/Out
Levels
DelayTime
Feedback
Patches Patch 0 Patch 1 Patch 2 Patch 3 Patch 4 Patch 5 Patch 6 Patch 7 Patch 8 Patch 9
8 8.0 8.1 8.2 8.3 8.4 8.5 8.6
Modulation *Mod:LFO Mod:Env L Mod:Env R *Mod:Latch *Mod:Sw 1 *Mod:Sw 2
Panning
Master Voice1 Voice2 Voice3 Voice4
*Master Voice1 Voice2 Voice3 Voice4
*Mstr Fbk *V1 Fbk *V2 Fbk *V3 Fbk *V4 Fbk
MstrWidth
*Mod:AR Env
Pitch *MstrCents Voice1 Voice2 Voice3 Voice4
Voice1 Voice2 Voice3
Voice4
0.5
FX Width
The PCM 81 Concert Hall provides very clean
reverberation. It is designed to remain behind the
direct sound — adding ambience, but leaving the
source unchanged. This effect has a relatively low
initial echo density which builds up gradually over
time.
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