A VCA (voltage controlled amplifier/ attenuator) is the heart of any compressor or peak limiter circuit, and there are quite a few different approaches. All available circuits have limitations, and this article looks at the various techniques used.

It's the Voltage Controlled Amplifier, or 'VCA', and it is an important element in the operation of any analogue synthesizer. Indeed, so fundamental is the VCA that it has its counterparts in every type of synthesis: digitally controlled analogue synths have 'DCAs', while pure digital synths and samplers have all manner of time-variant ...

VCAs have quite a few uses: You can use your VCA to turn just about anything into a volume control. Run your audio signal through it, then connect the CV input to a mod wheel, foot pedal, or any voltage source you want. One of the most common uses of a VCA is envelope shaping.

A variable-gain (VGA) or voltage-controlled amplifier (VCA) is an electronic amplifier that varies its gain depending on a control voltage (often abbreviated CV). VCAs have many applications, including audio level compression, synthesizers and amplitude modulation.

2018年2月4日 · The easiest to understand type of VCA, and probably the most popular, is the linear VCA. Here, the gain between the input and output is proportional to the value of the (assumed nonnegative) control voltage. A typical linear VCA …

2019年3月12日 · Typically, an audio source is sent into the Linear FM input and a modulation signal into the "VC" input, enabling FM whose intensity varies based on an incoming control voltage.

The Variable CV input (J5) allows you to control how much modulation is applied to the VCA-1. The level is controlled by R21. This is where you get into the fine tuning of controlling the VCA using any type of control or audio signal.

What Is a VCA? A VCA is a processor that can alter the amplitude of a signal proportional to the control voltage applied to its amplitude modulation control input. Simply, it is just an amplifier whose output you can control with a control signal. A …

2022年11月8日 · Ethan Winer offers his fifth Guitar-Controlled Synthesizer article where he describes how to make two key modules needed by every analog synthesizer: the Voltage Controlled Amplifier (VCA) and Voltage Controlled Filter (VFC).

2021年4月24日 · VCA is an abbreviation of Voltage Controlled Amplifier. Many VCAs do not actually provide any amplification, but actually 'turn down' a signal until control voltage is applied, i.e. maximum CV into a VCA control input will set the amplifier to fully open - no attenuation. Effectively most VCAs are actually Voltage Controlled Attenuators.