Analog Synthesis is a method of creating sounds that uses analog electronic circuits, where the sound representation is made through an electrical voltage that varies continuously.

The most common form of analog synthesis is subtractive synthesis, which works similarly to a sculptor. You start with a block of raw sound material and "sculpt" it until you reach the desired timbre.

The process generally follows these steps:

1. Oscillator (VCO): Generates a simple sound wave, but rich in harmonics (the "block of stone"). The most common waveforms are sawtooth, square, and triangular. Filter (VCF): "Sculpts" the sound, removing or attenuating certain frequencies to alter the timbre. It's like using different tools to shape the stone. Amplifier (VCA): Controls the volume of the sound over time. Modulers (LFO and Envelope Generator): Create movement and articulation in the sound. The Envelope Generator (like the ADSR) defines the "shape" of the volume or filter, while the LFO (Low Frequency Oscillator) creates cyclical modulations, such as vibrato.

The beauty of analog synthesis lies in the imperfections and "living" nature of the circuits, which give the sounds a warm and organic character, highly valued in electronic music. Classic synthesizers like the Moog Minimoog and the Roland Jupiter-8 are iconic examples of analog synthesis.