Dave Smith Instruments TETRA - Manual (Page 26)

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Audio Mod: 0...127 — Controls the amount of audio from Oscillator 1 used to
modulate the filter cutoff frequency. For filter-only audio, set O
SCILLATOR
M
IX
to 127, O
SCILLATOR
2 S
HAPE
to Off, and O
SCILLATOR
1 S
HAPE
to the desired
waveshape. This is useful for bell-like FM sounds. A wide range of sounds can
also be made using A
UDIO
M
OD
with the oscillators routed normally through the
filter.
Config: 2 Pole, 4 Pole — Selects either 2- or 4-pole operation for the filter.
Envelope Amount: -127…+127 — Sets the amount of filter envelope routed to
the cutoff frequency. This can be positive or negative, allowing inverted
envelope control of the filter.
Envelope Velocity: 0…127 — Amount of key velocity controlling the level of
the filter envelope.
Delay: 0...127 — Sets a delay between the time the filter envelope is triggered
and when the Attack portion actually begins.
Attack: 0…127 — Sets the Attack time of the filter ADSR envelope generator.
Decay: 0…127 — Sets the Decay time.
Sustain: 0…127 — Sets the Sustain level.
Release: 0…127 — Sets the Release time.
VCA Parameters
VCA Level: 0…127 — Sets a base level for the VCA (Voltage Controlled
Amplifier). This allows the VCA to be essentially bypassed, which is necessary
for Programs that drone.
Note: If VCA L
EVEL
is on full, Envelope Amount has no effect. You
normally want VCA L
EVEL
set to zero. For droning sounds you will
probably turn the VCA Level up.
Env Amount: 0…127 — Sets the amount of VCA envelope to the VCA level.
Env Velocity: 0…127 — Sets the amount of keyboard velocity controlling the
level of the VCA envelope.
Delay: 0...127 — Sets a delay between the time the amplifier envelope is
triggered and when the Attack portion actually begins.
Attack: 0…127 — Sets the Attack time of the VCA ADSR envelope generator.