Chapter 4: Programming Basics
43
PROGRAMMING BASICS
FILTER MODULATION
Planet Phatt contains a Z-plane filter for each of its 32 channels. The
block diagram of a single channel is shown below.
The
Tone
filter is a simple tone control and can be used to brighten
or darken the tone of an instrument. Each of the 17 Z-plane filters is a
powerful synthesizer filter which can dramatically alter the sound of
an instrument.
WHAT IS A FILTER?
To understand how a filter works we need to understand what makes
up a sound wave. A sine wave is the simplest form of sound wave. Any
waveform except a sine wave can be analyzed as a mix of sine waves at
specific frequencies and amplitudes.
One way to represent complex waveforms is to use a chart with fre-
quency on one axis and amplitude on the other. Each vertical line of
the chart represents one sine wave at a specific amplitude.
R
L
Volume
Pan
Volume
AHDSR
Instrument
Pitch
Sample
Start
Tone
Z-Plane
Filter
DCA
Aux.
DAHDSR
Velocity
Morph
Q
40
80
160
360
720 1440 2880
Frequency
Amplitude
Содержание Planet Phatt
Страница 1: ...OPERATION MANUAL E mu Systems Inc Fhlanett Phatt ...
Страница 9: ...1 Chapter 1 Basic Setup INTRODUCTION BASIC SETUP ...
Страница 10: ...Planet Phatt Operation Manual 2 ...
Страница 17: ...Chapter 2 Basic Operation 9 BASIC OPERATION ...
Страница 18: ...Planet Phatt Operation Manual 10 BASIC OPERATION ...
Страница 27: ...Chapter 3 Master Menu 19 MASTER MENU ...
Страница 28: ...Planet Phatt Operation Manual 20 MASTER MENU ...
Страница 43: ...Chapter 4 Programming Basics 35 PROGRAMMING BASICS ...
Страница 44: ...Planet Phatt Operation Manual 36 PROGRAMMING BASICS ...
Страница 63: ...Chapter 5 Edit Menu 55 EDIT MENU ...
Страница 64: ...Planet Phatt Operation Manual 56 EDIT MENU ...
Страница 88: ...Planet Phatt Operation Manual 80 EDIT MENU ...
Страница 89: ...Chapter 6 Step By Step 81 STEP BY STEP ...
Страница 90: ...Planet Phatt Operation Manual 82 STEP BY STEP ...
Страница 103: ...Chapter 7 Reference Section 95 REFERENCE SECTION ...