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Chapter 5: Signal Generators | VCO and LFO

⚛ Voltage Controlled Oscillator and Low Frequency Oscillator

⚛ Additional Information

⚛ The following is a transcript of the narration:

 

 

✸ Signal Generators: VCO and LFO

✸ A VCO is a Voltage Controlled Oscillator. 

✸ The oscillator, in it's simplest form, generates periodically repeating waveform of user defined frequency and user selectable shapes.

✸ This gives the audio the sensation of a single note.

✸ LFO normally oscillates at frequencies well below the audio range.


Patch 1  VCO

⚛ The following is a transcript of the narration:

 

 

✸ Patch One VCO

✸ Connect triangle wave output to VCA audio input.

✸ Open signal in and gain.

✸ Turn tune knob and octave switch to hear the range of frequencies.

✸ Put the signal in down and change the waveform.

✸ Pulse width has an individual modulation input and width control knob.

✸ Pay attention to difference in timbre, pitch and sound character.


Patch 2  VCO

⚛ The following is a transcript of the narration:

 

 

✸ Patch Two VCO

✸ Connect triangle wave output to VCA audio input.

✸ Switch VCO 1 to LFO mode and connect output to exponential frequency modulation input on VCO 2.

✸ Open signal in and Gain.

✸ Set tune knob on 5.

✸ Open exponential frequency modulation knob and you will hear LFO modulating the waveform..

✸ Turn tune on VCO 1 higher to speed LFO rate.

✸ This method creates laser type sounds and unusual backgrounds.


Bonus Patch

⚛ The following is a transcript of the narration:

 

 

✸ Bonus Patch

✸ Connect triangle wave output to VCA audio input.

✸ Open signal in and gain

✸ Switch VCO 1 to LFO mode and connect output to 1 V / Oct input  on VCO 2.

✸ Play with frequency range on both VCOs to adjust the tone and character.


⚛ Music in the chapter video: Dusha - Sad Bones