Oberheim GM 400
Digital Signal Processor
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3.3 STRUCTURE OF THE GM 400
Memory configuration.
The memory of the GM 400 is divided into three banks: A, B and C.
Each of them contains 128 memory locations (which from now on we will call patches), giving
a total of 384. They are all at the disposal of the user, who can program them as preferred.
The original factory programming settings for the 128 patches in bank A are maintained
permanently in a separate memory and can be recalled at any moment using a special
procedure described in point 8.1 FACTORY SETTINGS.
Groups and effects.
The GM 400 is designed to process the signal with up to 9 EFFECTS which can be
programmed at any one time. In addition, there is also a constantly active, programmable
Noise Gate (NG).
The effects are obtained by means of more than thirty algorithms and are arranged into
categories or GROUPS.
Each group is able to contain up to 5 different effects of the user's choice, and only one of
them can be made active. There are 9 groups available, and this gives the maximum number
of effects which can be used simultaneously (plus the noise gate, which is always active):
- COMPRESSOR (CMP): Compressor, Limiter, Dynamic-Processor.
- DISTORTER (DST): Distortion, Overdrive, Crunch.
- EQUALIZER (EQ): Graphic, Guitar, Parametric.
- AMP SIMULATOR (AMP): Guitar, Bass.
- MODULATION (MOD): Chorus, Flanger, Phaser, Tremolo, Vibrato.
- SPECIAL EFFECTS 1 (SP1): Wha-Wha, Double Combination, Double Chorus, Fade-In.
- SPECIAL EFFECTS 2 (SP2): Pitch Shift 1, Pitch Shift 2, 4 Voice Chorus.
- DELAY (DLY): Standard, Tap, Stereo, Multi, Metronome.
- REVERB (REV): Reverb, Gate Reverb, Virtual Chamber.
This can all be summed up by a simple chart:
P A T C H
Input Output
CMP
DST
EQ
AMP
M0D
SP1
SP2
DLY
REV
NG
Comp
Limit
Dyn-p
Dist
Over
Crun
Grap
Guit
Para
Guit
Bass
Chor
Flang
Phas
Trem
Vibr
Wha
Comb
2 Ch.
Fade
Psh1
Psh2
4 Ch.
Stan
Tap
Ster
Multi
Metr
Rev
Gate
Virt
Содержание GM-400
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