Substractive synthesiser voice basics :

• continous voltage controled oscilator that gets pitched through one octave standard
• next we use a voltage controlled amplifier which takes that signal and can quiet or loud, depending on the control voltage that goes into it
• gate – a note on event with sustain to create an envelope control voltage that goes into the VCA to tell it to shape the volume of the signal.

Examples: Unipolar modulation that is positive – view in SCOPE :one pole, above the treshhold.

LFO‘s (low filter oscilator) can work as analog signal trigger / clock / gate

The basic patch, as its name implies, allows for control of three essential aspects of sound utilizing the three main signal path modules: 

• frequency (VCO) – voltage controlled oscilator – initiates the sound wave and controls its frequency and determines the initial timbre, which is determined by the waveform option selected
• timbre (VCF) – voltage controlled filter. VCF filter module shapes the timbre via the filter type chosen, the initial c.o.f., the amount of Q*, and the movement of the c.o.f. over time as controlled by an envelope generator. —- The filter’s cutoff frequency (c.o.f.) is the point a specific frequency component would have lost approximately half the power (−3 dB or .707 RMS) of unaffected frequencies, often referred to as the half-power point.
• amplitude – VCA (voltage controlled amplifier) shapes the amplitude of the sound (its beginning, change over time, and end).

*degree of boost or cut and the width of the peak or notch is controllable with the ‘Q’ setting (sometimes labeled as bandwidth (BW))

https://cmtext.indiana.edu/synthesis/chapter4_synthesis_history.php

Resonance –

virtual audio driver – needed to record the sound from vcv to your computer (blackhole/soundlower)