189 APPENDIX B - GLOSSARY
Cyclic amplitude modulation similar in effect to Vibrato.
Toggle
Switch between two distinct states e.g. on/off, mono/poly etc..
U
Unipolar
Possible values can only be positive or negative, the range does
not include both. This term can apply to Amounts as well as
modulation sources (e.g. envelopes, channel pressure).
Unison
Several instances of the same note at the same time.
V
VA
Acronym for Virtual Analogue. Traditional subtractive synthesis
emulated via software.
Vibrato
Cyclic pitch modulation (usually around 5Hz). LFO3 is the most
common source of vibrato in the Virus.
Vocoder
“Voice Encoder”: Device often used to impose the formant
characteristics of the human voice onto other signal. Originally
developed to reduce the bandwidth of speech signals for com-
munication purposes.
Voice
A complete sound-generation and shaping unit (oscillator, fil-
eter, envelope, LFOs etc.). A monophonic synthesizer has only
one voice, Unison mode uses up 2 or more voices per note.
W
Waveshaping
Applying a distortion (“transfer function”) to a signal for complex
timbral modification.
Wet
The treated (e.g. reverb) portion of a sound i.e. without the orig-
inal dry signal.
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