The Physics Of Analog Synthesizers: How They Work And Why They’re Awesome
May 6, 2023
Introduction

Analog synthesizers are instruments that create sound by generating electrical signals that are used to control oscillators. These oscillators produce sound waves, which are then converted into audio signals that can be amplified and played through speakers.

Analog synthesizers were first used in the early 1900s, and they became popular in the 1970s with the rise of electronic dance music (EDM) and synthpop. Today, they are used by a variety of artists in all genres of music.

Analog synthesizers are known for their warmth and richness of sound, which is why they are still beloved by many musicians today. In this article, we will explore the physics of analog synthesizers and how they work. We will also discuss why they are considered to be such great instruments.

The basic principle behind analog synthesizers is the use of voltage-controlled oscillators (VCOs), which generate a waveform when a voltage is applied to them. The waveform can then be modified by various circuit components, such as filters and envelope generators, to shape the sound. One key feature of analog synthesizers is the ability to modulate parameters such as pitch, amplitude, and timbre using control voltage inputs. This allows for complex and evolving sounds that can be manipulated in real time by the musician.

Another important aspect of analog synthesizers is the use of analog circuits, which are made up of electronic components such as resistors, capacitors, and transistors. These circuits can add subtle variations and imperfections to the sound, giving it a unique character and warmth that cannot be replicated by digital synthesizers. However, this analog nature also means that each instrument can have its quirks and inconsistencies, which can make it more difficult to reproduce the same sound twice. This can be seen as a challenge by some musicians, who enjoy exploring the limits of their instruments and finding new sounds. In recent years, there has been a resurgence of interest in analog synthesizers, driven in part by the popularity of electronic dance music and the desire for a more tactile and hands-on approach to music production. Many manufacturers have started reissuing classic models or creating new analog synthesizers with modern features and capabilities.

In conclusion, analog synthesizers are beloved by musicians for their unique sound and the creative possibilities they offer. Their use of voltage-controlled oscillators and analog circuits allows for complex and evolving sounds that can be modulated in real-time. While they may have some limitations and idiosyncrasies, many musicians find the challenge of working with an analog synthesizer to be part of its charm. I hope this article gives you a better understanding of just exactly how an analog synthesizer works and why they’re sooooooooooooo cool!!!! Even to this very day.