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feat(vm): add frequency modulation for oscillators

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Closes #105
This commit is contained in:
5684185+vsariola@users.noreply.github.com
2023-10-07 14:42:48 +03:00
parent 12dd3dada0
commit e5691d670a
10 changed files with 80 additions and 0 deletions
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2
vm/interpreter.go
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@ -454,6 +454,7 @@ func (s *Interpreter) Render(buffer []float32, maxtime int) (samples int, time i
} else {
omega *= 0.000038 // pretty random scaling constant to get LFOs into reasonable range. Historical reasons, goes all the way back to 4klang
}
omega += float64(unit.ports[6]) // add frequency modulation
var amplitude float32
*statevar += float32(omega)
if flags&0x80 == 0x80 { // if this is a sample oscillator
@ -515,6 +516,7 @@ func (s *Interpreter) Render(buffer []float32, maxtime int) (samples int, time i
stack = append(stack, output)
detuneStereo = -detuneStereo
}
unit.ports[6] = 0
case opDelay:
pregain2 := params[0] * params[0]
damp := params[3]