Glossary – LinPlug MorphoX User Manual

Page 39

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Glossary

AM:

AM or "Amplitude Modulation" is a process where the
amplitude of one oscillator (the carrier) is controlled by
another (the modulator). When the frequency of the
modulator is periodic and below the audio range (less than
20 Hz) tremolo is produced. When the modulation
frequency is within the audio range metallic overtones are
produced.

Amplifier:

A signal processing device that changes the amplitude, and
hence the volume, of a signal.

Effect:

A signal processing device that changes some aspect of
the input signal. An enormous number of different effect
types are available. These include Chorus (which produces
a thickening of the signal), Delay (adding echoes to the
signal) and Distortion (which changes the shape of the
waveform usually adding overtones).

Envelope:

A time-varying signal used to control the development of
another signal after it has been triggered. Envelopes are
often used for controlling a signal's amplitude or filter's
frequency. The shape of the envelope is determined by the
number of control parameters. Usually four parameters are
available: Attack Time, Decay Time, Sustain Level and
Release Time.

Filter:

A signal processing device that suppresses or "filters" out
specific parts of a signal's frequency spectrum. Numerous
types of filter are used in audio synthesis. These include
Low Pass, High Pass, Band Pass and Notch.

FM:

FM or "Frequency Modulation" is a process where the
frequency of one oscillator or filter (the carrier) is controlled
by another (the modulator). When the frequency of the
modulator is periodic and below the audio range (less than
20 Hz) vibrato is produced. When the modulation frequency
is within the audio range, Frequency Modulation is
produced.

MorphoX user manual 1.1.0

page 39

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