I want to use a single Oscillator to control
both pitch and filter cutoff frequency. I want the cutoff
value to rise when pitch go down. I want to use a SINGLE
LFO and would prefer to
avoid Sound To Global Controller.
Would like to do everything in sound editor
NOT in VCS.
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KarlMousseau - 23 Oct 2003
In the
Cutoff field, paste in the control oscillator and combine it with the base frequency using subtraction. For example,
!KeyPitch - (12 nn * [LFO] L)
In the filter's input Sound, paste in the control and combine it using addition. For example,
!KeyPitch + (12 nn * [LFO] L)
In the
VCF Sound, you drag the LFO into the
Modulation field. To invert the phase of the modulator, run the LFO through an
Attenuator and set the
Left and
Right parameters to -1.
Osc Range
From my understanding an Osc output range is from -1 to 1.
If I set 2 oscillators frequency to:
1st osc
220 hz + (12 nn * [LFO] L)
2nd osc
220 hz - (12 nn * [LFO] L)
1st osc frequency goes only higher than 220 hz
and 2nd osc lower than 220 hz.
-What did I miss? 220 hz - (-1) should give a value higher than 220 hz...
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KarlMousseau - 23 Oct 2003
When the output of the LFO is at its maximum (+1), then the first oscillator's frequency will be
220 hz nn + 12 nn (one octave above 220 hz, or 440 hz), and the second oscillator's frequency will be
220 hz nn - 12 nn (one octave below 220 hz, or 110 hz). When the output of the LFO is at its minimum (-1), then the two oscillators frequencies will be reversed. This means that the two oscillator's frequencies will always be moving in opposing directions.
Note that you should convert the frequency in hertz into a pitch in note numbers in order for the octave relationship to hold. (Otherwise, Kyma will do the calculation in hertz, which will be nowhere near an octave frequency change.)
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KurtHebel - 23 Oct 2003
Working as expected.
I'm still a newbie,
I didn't convert hz to nn!
Thanks!
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KarlMousseau - 23 Oct 2003
| WebForm |
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| Question: | How do I control two parameters with same LFO? |
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| Keywords: | modulation, LFO, pasting Sounds into parameter fields, filter cutoff |
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