User`s guide

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filter frequency
See “cutoff frequency.”
flanging
An effect that occurs when a signal is mixed with a delayed copy of
the signal, while the delay time continually changes. You can hear
this effect when a jet plane passes overhead, because the direct
sound is being mixed with the delayed reflection from the ground,
and the relative delay time changes with the angle of the plane. A
flanger may be thought of as a swept comb filter.
The first musical use of flanging involved mixing the outputs of two
tape recorders while pressing the flange of one to slow it down. You
can implement flanging in SFX Machine Pro by delaying a signal,
modulating the delay with a sine wave, and mixing in some of the
original sound.
FM
See “Frequency Modulation.”
formant
A peak in the frequency response of a vocal tract or musical
instrument. Different vowel sounds are characterized by the
position and shape of their formants. The human vocal tract
typically has five formant regions.
frequency
The repetition rate of a sound, typically measured in cycles per
second. A sound’s pitch is related to its frequency.
Frequency Modulation
A modulation method in which the frequency of one wave (the
“carrier”) is controlled by the amplitude of another wave (the
“modulator”).
Low-frequency FM results in vibrato. Modulator frequencies that are
themselves in the audio range result in the generation of sideband
tones that are not necessarily present in either the carrier or the
modulator.