User`s guide

59
GLOSSARY
additive synthesis
A method of sound synthesis based on adding sine waves in a
harmonic series (e.g., 100 Hz, 200 Hz, 300 Hz, etc.) The Hammond
B3 organ implemented additive synthesis by allowing the user to
adjust “drawbars.” In SFX Machine Pro, you can use the sliders to
mix sine waves in various proportions.
aliasing
A type of distortion caused by sampling at too low a sample rate. To
avoid aliasing, the sample rate must be at least twice the highest
frequency in the sound.
AM
See “Amplitude Modulation.”
amplitude
Amplitude refers to the relative height of a waveform. A sound’s
loudness is a function of its amplitude.
Amplitude Modulation
A modulation method in which the amplitude of one wave (the
“carrier”) is controlled by the amplitude of another wave (the
“modulator”). Unlike Ring Modulation, Amplitude Modulation uses a
modulator that is unipolar (i.e., always positive). In SFX Machine Pro,
the AM modulator is automatically converted to a unipolar signal.
Low-frequency AM results in volume control or tremolo effects.
Modulator frequencies that are themselves in the audio range result
in sum and difference sideband tones that were not necessarily
present in either the carrier or the modulator.
artifact
An unintended side effect of a technological process.
bandpass
A bandpass filter passes an area around the specified cutoff
frequency and rolls off (attenuates) frequencies to either side.