Glossary - LinPlug Albino 3 Manual

Glossary

AM:
Amplifier:
Brown Noise:
Effect:
Envelope:
Filter:
Rob Papen Albino 3.0
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.
A signal processing device that changes the amplitude,
and hence the volume, of a signal.
A signal in which the amplitude is inversely proportional to
pitch. It has the special property of being a "fractal" or
statistically self-similar waveform. No matter how far you
zoom in on the wave with an oscilloscope, the waveform
has the same "texture". Brown noise is also the sound
made by a "random walk" which makes the amplitude of a
waveform travel up and down at random. The pitch motion
of most musical melodies has a 1/f distribution.
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).
A time-varying signal used to control the development of
another signal after it has been triggered. Envelopes are
most often used for controlling a signal's amplitude. 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.
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. The tone
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