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AF_OSC documentation |
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Saturday, 27 January 2007 |
 | Additive oscillator module for SynthEdit. AF_OSC uses wavetables that are built when you first use it.
Waveforms : All the basic waveforms are available : sinus, sawtooth, triangle, square, pulse, noise. Special waveforms : bipolar pulse, band pass filtered noise, bipolar square, asymetric triangle and minblep based waveforms.
AF_OSC can generate bandlimited hardsync using a unique techology developed by VSTLine.
Other features : Initial phase, Phase reset, Pulse width modulation |
The current version of AF_OSC comes in a 9 pin package, 7 inputs and 2 outputs. When you start up your audio engine first time, the oscillator will generate and cache a 2 MB wavetable that will be used later to generate sound.
Pin name
| Description | | Pitch | Polyphonic input. 0-10V Range values accepted. Use hidden pin Freq Scale to set the scale to Volt/KHz or V/octave.
For LFO please use Volt/KHz mode, V/Octave mode uses lookup tables and it's less accurate in the lower range.
BPF-Noise - sets the colour of the noise (center frequency of the bandpass filter)
| Pulse Width
| Sets the pulse width of the waveform (Square (PW), Pulse (PW), Bi-Pulse (PW), Morph Triangle,Saw-Square, BPF-Noise, Sqr minblep) Saw-Square - set's the ratio between Sawtooth and Square wave
BPF-Noise - sets the resonance of the bandpass filter | | Active | This pin set's the state of the module. If the input it's greater than 0V the module is active, otherwise no processing is done (sleep mode). For best results , connect your VCA-s ADSR output to this pin. | | Sync Phase In | This pin is used only for hardsync. If the oscillator is slave , connect the master oscillators Sync Phase Out to this pin for phase syncronisation. When this pin is connected AF_OSC will automagically hardsync to the master oscillator. | Soft Sync
| Resets the oscillator phase when the input signal crosses 0V (from neative to positive)
| Initial Phase
| This sets the starting phase of the oscillator. When the oscillator gets a Sync reset from the Soft Sync pin, the phase will be set to this value.
Range 0-10V | | Waveform | Sine, Sawtooth, Ramp, Square, Pulse, Bi-Pulse, Triangle, Vintage Saw , Exp Saw , Morph Triangle , Parabola , Saw-Square , BPF-Noise , White noise , Saw minblep , Square minblep | | Output | This is your audio output
| Sync Phase Out
| If the oscillator is a master, connect this pin to your slave oscillator Sync Phase In to hardsync
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