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Velo Sens
Turn the Velo Sens knob to set the operator's amplitude sensitivity to keyboard velocity.
D
LFO Sens
Turn the LFO Sens knob to set the operator's sensitivity to LFO amplitude modulation when using the Mod
D
wheel.
Pan
Set the operator's L/R Output panning position with the Pan knob.
D
This only has any effect when you use an algorithm where the operator is routed as a carrier, i.e. NOT as a
modulator.
Note that the Pan function was not available on the original Japanese FM synth.
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Envelope Generators (EG)
The operator envelope generators can affect the sound in two significantly different ways:
• If the operator is a carrier in the selected algorithm, i.e. routed straight to the output, the envelope affects the
amplitude of the sound.
• If the operator is a modulator in the algorithm, i.e. modulates another operator, the envelope affects the timbre
of the sound.
The envelope generators in PX7 are of a special type, called Level & Rate envelopes. As opposed to the traditional
analog-style Attack-Decay-Sustain-Release envelope, this type uses a number of Levels that are reached at different
Rates.
In practice this means that low Rate values will render slow Level changes and high Rate values will result in fast
Level changes, i.e. the other way around compared to the Attack, Decay and Release parameters in traditional ADSR
envelope generators.
To make the envelope controls more intuitive to those who are familiar to ADSR envelopes, we decided to
!
make the Rate sliders work similar to traditional A, D and R parameters, i.e. the highest Rates (shortest times)
are reached when the sliders are all the way down.
Another thing to bear in mind is that even with the same Rate setting, the envelope will take longer to change
between big Level changes than small changes. If two adjacent Levels are the same, the Rate value between these
levels doesn't matter at all.
The figure printed on the front panel shows the various Level and Rate stages:
The envelope stages printed on the front panel
PX7 FM SYNTHESIZER
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