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Planet Phatt Operation Manual
40
PROGRAMMING BASICS
ENVELOPE GENERATORS
An envelope can be described as a “contour” which can be used to
shape the sound in some way over time. Each channel of the Planet
Phatt contains two envelope generators. One of the envelope genera-
tors, the Alternate Volume Envelope, controls the volume of the
primary or secondary instrument over time and has 5 stages, Attack,
Hold, Decay, Sustain, and Release. The other envelope, the Auxiliary
Envelope, can be routed to any realtime control destination and is a
general purpose envelope. The Auxiliary Envelope has 6 stages: Delay,
Attack, Hold, Decay, Sustain, and Release. The time of each stage can
be adjusted to create myriad envelope shapes, which in turn shape the
sound. The Envelope parameters can be described as follows:
• Delay
The time between when a key is played and when the attack
phase begins.
•␣ Attack
The time it takes to go from zero to the peak (full) level.
•␣ Hold
The time the envelope will stay at the peak level before starting
the decay phase.
•␣ Decay
The time it takes the envelope to go from the peak level to the
sustain level.
•␣ Sustain
The level at which the envelope remains as long as a key is held
down.
•␣ Release
The time it takes the envelope to fall to the zero level after the
key is released.
Percussion
Organ
String
Plucked
••• The generalized envelope
shapes of a few types of
sounds are shown above.
D
e
l
a
y
level
time
key
down
A
t
t
a
c
k
H
o
l
d
D
e
c
a
y
Sustain
R
e
l
e
a
s
e
key
released
••• Long release times can
increase the incidence of
“channel ripoff”. If you are
running out of voice
channels, try reducing the
volume envelope release
time.
Summary of Contents for Planet Phatt
Page 1: ...OPERATION MANUAL E mu Systems Inc Fhlanett Phatt ...
Page 9: ...1 Chapter 1 Basic Setup INTRODUCTION BASIC SETUP ...
Page 10: ...Planet Phatt Operation Manual 2 ...
Page 17: ...Chapter 2 Basic Operation 9 BASIC OPERATION ...
Page 18: ...Planet Phatt Operation Manual 10 BASIC OPERATION ...
Page 27: ...Chapter 3 Master Menu 19 MASTER MENU ...
Page 28: ...Planet Phatt Operation Manual 20 MASTER MENU ...
Page 43: ...Chapter 4 Programming Basics 35 PROGRAMMING BASICS ...
Page 44: ...Planet Phatt Operation Manual 36 PROGRAMMING BASICS ...
Page 63: ...Chapter 5 Edit Menu 55 EDIT MENU ...
Page 64: ...Planet Phatt Operation Manual 56 EDIT MENU ...
Page 88: ...Planet Phatt Operation Manual 80 EDIT MENU ...
Page 89: ...Chapter 6 Step By Step 81 STEP BY STEP ...
Page 90: ...Planet Phatt Operation Manual 82 STEP BY STEP ...
Page 103: ...Chapter 7 Reference Section 95 REFERENCE SECTION ...