https://github.com/jstrait/jssynth

Make music in your browser with this synthesizer and sequencer
https://github.com/jstrait/jssynth

audio instrument music sequencer synth synthesizer webaudio

Last synced: about 2 months ago
JSON representation

Make music in your browser with this synthesizer and sequencer

• Host: GitHub
• URL: https://github.com/jstrait/jssynth
• Owner: jstrait
• License: mit
• Created: 2014-07-08T03:32:19.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2024-07-14T22:33:29.000Z (5 months ago)
• Last Synced: 2024-10-13T15:27:06.998Z (about 2 months ago)
• Topics: audio, instrument, music, sequencer, synth, synthesizer, webaudio
• Language: JavaScript
• Homepage: https://www.joelstrait.com/jssynth
• Size: 4.02 MB
• Stars: 36
• Watchers: 9
• Forks: 6
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-javascript-audio - jssynth - powerful synth and sequencer (MIDI instruments / Synths)

README

        
# JS-130

A synthesizer and sequencer that runs in your browser, using the WebAudio API.

Try it out here: [https://www.joelstrait.com/jssynth/](https://www.joelstrait.com/jssynth/)

## Example Song

The song below is an example of what you can create with the JS-130, along with [Beats Drum Machine](https://beatsdrummachine.com) and GarageBand.

[JS-130 Example Song](https://www.joelstrait.com/jssynth/js-130-demo.m4a)

## Features

* Oscillator Instruments

  * Base oscillator with sine/square/saw/triangle wave

  * Secondary oscillator with same wave types, and optional detune from primary oscillator

  * White or pink noise

  * Adjustable volume for each noise source (oscillator 1, oscillator 2, noise)

  * LFO to control oscillator pitch (i.e. "pitch wobble")

  * Filter, with LFO and ADSR envelope to control filter cutoff frequency

  * ADSR Envelope to control loudness

  * Feedback delay and reverb effects

* Sampler Instruments

  * Use a sound file (*.wav, *.mp3, etc.) as an instrument

  * Filter, with LFO and ADSR envelope to control filter cutoff frequency

  * ADSR Envelope to control loudness

  * Feedback delay and reverb effects

* Sequencer

  * Multiple tracks, each with its own instrument and set of patterns

  * Enter notes in patterns via on-screen piano keyboard, MIDI keyboard, or computer's keyboard

  * Full songs 1-99 patterns long

  * Volume control + mute for each track

* Tempo control

* Master volume control

* On-screen keyboard to enter notes and try out sounds

* MIDI keyboard support (only in browsers that support Web MIDI, such as Chrome)

* Download sequencer output to a *.wav file

## Running Locally

* If running the app locally for the first time, run `yarn install`

* Run `yarn serve`, which will build the app and start a local development server

* Open the `localhost` URL listed in the command-line output in your browser

* If a source file is changed while the server is running the app will automatically be rebuilt. However, you'll need to manually refresh the page in your browser to see the changes.

## Building For Production

* If building the app for the first time, run `yarn install`

* Run `yarn build`

* The `dist/` folder will contain the files that should be deployed to production

## Screenshots

Sequencer:

![JS-130 Sequencer](js-130-sequencer.png)

---

Instrument editor:

![JS-130 Instrument Editor](js-130-instrument-editor.png)

---

Pattern editor:

![JS-130 Pattern Editor](js-130-pattern-editor.png)