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Synthesizers

A synthesizer records nothing and amplifies nothing: it builds every sound electronically from scratch.

By Greg Goodwin · Published October 3, 2026 · Updated October 24, 2026

Synthesizers

Cheat Sheet

  • Generates sound entirely electronically, using oscillators, rather than recording or amplifying any acoustic vibration the way traditional instruments do.
  • The Moog synthesizer, developed by Robert Moog in the 1960s, was among the first commercially successful synthesizers and helped define the instrument's early sound.
  • 'Subtractive synthesis,' the most common approach, starts with a harmonically rich raw waveform and removes frequencies using filters to shape the final tone.
  • MIDI (Musical Instrument Digital Interface), standardized in 1983, lets synthesizers, computers, and other electronic instruments communicate performance data universally.
  • A sampler, related but distinct from a synthesizer, plays back recorded audio snippets rather than generating sound from scratch electronically.
  • Synthesizers were foundational to multiple genres including disco, new wave, and electronic dance music, and remain central to most modern pop production.

The 60-Second Version

A synthesizer generates sound entirely electronically, using components called oscillators, rather than recording or amplifying any acoustic vibration the way traditional instruments like a guitar or piano do. The Moog synthesizer, developed by Robert Moog in the 1960s, was among the first commercially successful synthesizers on the market, and it helped define the instrument's early, now-iconic sound for an entire generation of musicians. The most common approach to generating that sound, called "subtractive synthesis," starts with a harmonically rich raw waveform and then removes specific frequencies using filters to shape the final, more refined tone a listener actually hears. A major technical milestone for the instrument came with MIDI, or Musical Instrument Digital Interface, standardized in 1983, which let synthesizers, computers, and other electronic instruments communicate performance data universally for the first time, regardless of manufacturer. It's worth distinguishing a synthesizer from a sampler, a related but genuinely distinct instrument that plays back recorded audio snippets rather than generating sound from scratch electronically the way a true synthesizer does. Synthesizers proved foundational to multiple entire music genres, including disco, new wave, and electronic dance music, and they remain absolutely central to most modern pop production today, often working alongside or in place of traditional acoustic instruments.

The Long Version

Built From Nothing, Not Recorded

A synthesizer generates sound entirely electronically, using components called oscillators, rather than recording or amplifying any acoustic vibration the way traditional instruments like a guitar or piano do, a fundamentally different sound-generation process from literally every acoustic instrument that came before it.

The Instrument That Defined a Sound

The Moog synthesizer, developed by Robert Moog in the 1960s, was among the first commercially successful synthesizers on the market, and it helped define the instrument's early, now-iconic sound for an entire generation of musicians who adopted it across rock, funk, and early electronic music.

Starting Rich, Then Carving Away

The most common approach to generating that sound, called "subtractive synthesis," starts with a harmonically rich raw waveform and then removes specific frequencies using filters to shape the final, more refined tone a listener actually hears, a process that gives synth players enormous control over their final sound.

A Universal Language for Electronic Instruments

A major technical milestone for the instrument came with MIDI, or Musical Instrument Digital Interface, standardized in 1983, which let synthesizers, computers, and other electronic instruments communicate performance data universally for the first time, regardless of manufacturer, radically simplifying how musicians combined electronic gear in the studio and on stage.

Not the Same as a Sampler, and a Genre-Defining Legacy

It's worth distinguishing a synthesizer from a sampler, a related but genuinely distinct instrument that plays back recorded audio snippets rather than generating sound from scratch electronically the way a true synthesizer does. Synthesizers proved foundational to multiple entire music genres, including disco, new wave, and electronic dance music, and they remain absolutely central to most modern pop production today, often working alongside or in place of traditional acoustic instruments.

Why People Care

Synthesizers represent one of the only major instrument categories invented in the modern electronic era rather than evolving gradually over centuries, and understanding how they actually generate sound from scratch explains why they opened up entirely new genres of music that acoustic instruments simply couldn't have produced on their own.

Glossary

Oscillator
The core sound-generating component in a synthesizer, producing a raw electronic waveform before further shaping.
Subtractive synthesis
The most common synthesis method, starting with a harmonically rich waveform and removing frequencies using filters to shape tone.
MIDI
Musical Instrument Digital Interface, a standardized 1983 protocol letting synthesizers and computers exchange performance data.
Moog synthesizer
An early, commercially successful synthesizer developed by Robert Moog in the 1960s, influential in defining the instrument's early sound.
Sampler
An electronic instrument that plays back recorded audio snippets, distinct from a synthesizer's electronically generated sound.

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