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With the Delay knob you set the time it should take for the LFO to apply modulation after you hit a key.
D
Select LFO waveform by clicking the up/down buttons above the Waveform display.
D
Set the desired pitch modulation depth with the LFO to Pitch knob.
D
This control is independent from the ModWheel control.
Set the desired amplitude modulation depth with the LFO to Amp knob.
D
This control is independent from the ModWheel control.
Pitch Envelope
The global Pitch Envelope can be used for modulating the pitches of all operators. The pitch modulation envelope is
global for all operators.
Like the other envelope generators in PX7, the Pitch Envelope is of the Level & Rate type. One difference, though, is
that the Levels are bipolar relative to the nominal pitch. Nominal pitch is achieved when the Level sliders are in their
center positions. The range of the Level parameters is +/- 4 octaves.
The highest Rates (shortest times) are reached when the Rate sliders are all the way down.
!
The figure below shows the Pitch Envelope principle:
50
R1
(L4)
0
-50
Key Down
The Pitch Envelope Generator principle
• When you press a key on the keyboard, the pitch goes from value L4 to value L1 at the R1 rate.
• When value L1 has been reached, the pitch starts to change to the L2 value at the R2 rate.
• When value L2 has been reached, the pitch starts to change to the L3 value at the R3 rate.
• The L3 value is then maintained as long as you hold down the key.
The level L3 corresponds to the Sustain level in a standard ADSR envelope.
• When you release the key, the level changes back to the L4 value at the R4 rate.
Note that the L4 value doesn't necessarily have to be zero, in which case the L4 value will change the nominal
!
pitch.
For more details on how the Envelope Generators in PX7 work, see
L1
R2
L3
R3
L2
L3
R4
L4
(time)
Key Up
"Envelope Generators
(EG)".
PX7 FM SYNTHESIZER
13
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