Morpheus Operation Manual84
PRESET PROGRAMMING
The Tone filter is a simple low-pass tone control which can be used to
darken the tone of an instrument. The Z-Plane filter is an ultra-
powerful synthesizer filter which can dramatically alter the sound of
an instrument.
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 and
frequency.
20
40
60
80
100
40 80 160 360 720 1440 2880
Frequency
...
Amplitude
Any waveform can be analyzed as a mixture of sine waves.
FILTER MODULATION
The block diagram of a single channel is shown below.
R
L
Pan
Instrument
Tone
DCA
Morph
Filter
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