Synth Studio: Online Synth and Beat Maker, Free

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Synth Studio no file limit

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Synth Studio

Audio Tools · Runs in your browser

A synthesizer and beat maker in your browser: play it on the computer keyboard, the screen or a MIDI keyboard, program drums and melodies on up to eight tracks, shape every sound from four macros down to each oscillator, and record what you play.

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Synth Studio

Overview

A synthesizer and beat maker that plays the moment you press a key. Up to eight tracks of drums and synths, a step grid with chance, repeats and per-step knob settings, and a piano roll that follows the key. Four macros shape any sound; the hood opens the full voice: two oscillators with FM and sync, a ladder filter, three envelopes, two LFOs, a modulation matrix and effects. Save sounds, share them as links and record takes.

Play on any computerNo install and no account: a school Chromebook or a work laptop is enough.
Sketch a beat in a few minutesStart from the beat that is already there, change a step, add a bass line, record a melody over it.
Design a sound for your DAWBuild a patch, record a take to WAV and drop it into your project.
Learn how a synth worksTurn one knob and see the filter curve and envelopes change with it.
Send a sound to a friendCopy the link: the sound is inside it, so they hear exactly what you made.

Key features

Plays from the computer keyboard, the screen and a MIDI keyboard, with velocity, pitch bend, mod wheel and sustain
Up to eight tracks: drum kits on a step grid, synths on a piano roll that follows the key
Eight synthesized drums per kit (kick, snare, clap, hats, toms, perc), each with tune, decay, tone and punch
Every step has velocity, chance, repeats and a nudge, and can hold its own knob settings
Record by playing, knob moves included; swing, polymeter and eight patterns per track
Scale lock: the keys follow the key you choose, and seven chord pads play its chords
Four macros on every sound: Tone, Shape, Space and Motion
Two oscillators with FM, sync and ring, a sub, noise, unison up to seven, drift and a wavefolder
A 24 dB ladder filter that self-oscillates, and a 12 dB filter with low, band, high and notch
Three envelopes, two LFOs and an eight-slot modulation matrix
Drive, chorus, tempo-synced delay and reverb
Arpeggiator in time with the tempo, with hold
Vary nudges a sound, A/B compares two versions, undo takes anything back
44 sounds, 8 drum kits and 7 beats to start from (hip-hop, R&B, electro, experimental), and your own sounds saved in this browser
Share a sound as a link: the sound travels inside the link
Record what you play to a WAV file

Set

Audio Tools 19

Neighbours

01 Audio Transcriber 02 Generate AI Music 03 Audio Converter 04 Audio Editor 05 BPM Detector 06 DJ Booth

Specification

Command: audio.synth_studio
Set: Audio
Input: text
Output: WAV
Max file: no limit
Batch: single file

Runtime

Engine: ffmpeg-wasm 0.12
Threads: — workers
Isolated: —
WebGPU: —
Memory: —

Transport 0 B

Your file is opened, worked on and saved inside this tab. This tool has no upload step, so your file has nowhere else to go.

Keys

Search: ⌘K
Panels: ⌘1 · ⌘2
Full width: F
All keys: ⌘/

How it works

Play

Press a key on the screen or on your computer keyboard (A to '). Scale lock is on, so every key you can reach is in the key shown at the top.

Make a beat

Press Play: a beat and a bass line are already there. Or open one of the beats (boom bap, trap, slow jam, neo soul, electro, a polymeter experiment), click steps on the drum grid, draw notes on the piano roll, or arm recording and play along.

Shape it with the macros

Tone, Shape, Space and Motion each move several settings at once. Vary nudges the whole sound when you want something new.

Open the hood

Every oscillator, the filter, the envelopes, the LFOs, the modulation matrix and the effects are there to change, with a picture of what the filter and envelopes do.

Keep it

Save the sound in this browser, copy a link that carries it, or record a take to WAV.

Frequently asked

Is anything uploaded?

No. The synth runs in your browser, sounds are saved in this browser, and a shared link carries the sound in the part after the #, which browsers never send to a server.

Can I make beats with it?

Yes. Start from one of seven beats (hip-hop, R&B, electro and experimental) or from scratch. Each project has up to eight tracks: drum kits on a step grid and synths on a piano roll, with swing, chance, repeats, eight patterns per track and recording by playing. The project is saved in this browser as you go.

Can I use a MIDI keyboard?

Yes, in browsers with Web MIDI, like Chrome and Edge. Press MIDI and play: every channel is heard, with velocity, pitch bend, the mod wheel, the sustain pedal and channel pressure.

Why is there a delay between a key and the sound?

Every device adds some. The synth shows the figure the browser reports, next to the voice count. Wired headphones and a desktop are fastest; Bluetooth adds 150 ms or more.

How many notes can sound at once?

Sixteen on a computer, eight on a phone or tablet. Thick unison sounds use more of the processor, so they get fewer notes. When every voice is busy, the oldest note makes way.

What does scale lock do?

It dims the keys outside the key you chose, makes the computer keyboard's middle row play the scale step by step, and gives the chord pads that key's seven chords. A MIDI keyboard still plays every note.

Keys

Search: ⌘K
Panels: ⌘1 · ⌘2
Full width: F
All keys: ⌘/

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