Online Synthesizer

Free online synth with oscillators, LFOs, filters, effects, noises, instruments and more.





This is a powerful online synthesizer. More than a simple synth, it lets you easily create your own synths with any number of intermediate audio processing modules. Create and customize any number of oscillators, LFOs, filters, effects, envelopes, noises, instruments, keyboards, gains, panners, meters and more.

This tool is free, with no download required, no signup required and works directly in the browser. It was created using Tone.js library.



Features

Unlimited audio nodes

Create any number of oscillators, LFOs, synths, noises, filters, effects, envelopes and more. Connect the processing modules freely to create any type of sound or instrument.

Customizable envelopes

Customize attack, decay, sustain and release. Choose between diferent types of curves: linear, exponential, bounce, cosine, sine, ripple and step.

Multiple types of filters

Many types of filters available: lowpass, highpass, bandpass, lowshelf, highshelf, notch, allpass and peaking.

Multiple types of effects

Many types of effects available: feedback delay, tremolo, distortion, ping-pong delay, reverb and more.

Multiple types of instruments

Many types of instruments available: basic synth, AM synth, FM synth, Mono synth, Duo synth, Membrane synth, Metal synth, Noise synth and Pluck synth.

Many types of modulation

Many types of modulation available.


Changelog

2025-12-14
  • Initial version, with oscillators, LFOs, instruments, noises, filters, effects, envelopes, connections, keyboards, meters, scales, gains and panners.