Virtual Synthesizer & Music Maker
The Moog synthesizer, invented in 1964, launched the electronic music revolution
Synth Pad is a free, browser-based virtual synthesizer that lets you create electronic music using the Web Audio API. It features four waveform types, real-time effects processing, ADSR envelope shaping, and multi-track recording — all running directly in your browser with no downloads, plugins, or signup required. Whether you are a beginner exploring sound design or a musician sketching out ideas, this tool gives you a complete synthesis environment at your fingertips.
Select from Sine, Square, Sawtooth, or Triangle waveforms. Each produces a fundamentally different tone color. Sine is pure and clean, Square is rich and hollow, Sawtooth is bright and buzzy, and Triangle is soft and warm.
Use the ADSR envelope sliders to control how each note evolves. Set a slow Attack for swelling pads, a fast Decay for percussive plucks, high Sustain for organ-like tones, and long Release for atmospheric tails.
Toggle Reverb for spacious ambience, Delay for rhythmic echoes, Filter for tonal sculpting, and Distortion for gritty edge. Adjust each parameter with dedicated sliders for precise control.
Hit Record and play a phrase. You can layer up to four tracks to build complete arrangements. Use the metronome with adjustable BPM to stay in time while recording.
A synthesizer is an electronic instrument that generates sound using oscillators, filters, and envelopes. Unlike acoustic instruments that produce sound through physical vibration, synthesizers create tones electronically and can shape them into virtually any sound imaginable — from warm pads to cutting leads to deep bass.
Each waveform has a distinct character. Sine waves are pure and smooth, perfect for sub-bass and flutes. Square waves are hollow and buzzy, great for chiptune and reed sounds. Sawtooth waves are rich and bright, ideal for leads and pads. Triangle waves are soft and mellow, sitting between sine and square in character.
ADSR stands for Attack, Decay, Sustain, and Release — the four stages that shape how a sound evolves over time. Attack is how quickly the sound reaches full volume. Decay is how fast it drops to the sustain level. Sustain is the volume held while a key is pressed. Release is how long the sound fades after you let go.