npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

jsynth-ww

v2.3.0

Published

write audio with javascript functions in the browser, now with webworkers

Downloads

5

Readme

jsynth-ww

This is jsynth with webworkers, and it is somewhat different because your function needs to return your function, for proper context scoping. Becuz this uses webworkers, there is also a method for changing your DSP function.

Use this module to generate audio/DSP with javascript functions in the browser.

Pass your audio context, and your DSP function to the constructor. Optionally pass a 3rd param, a buffer size. See the Web Audio API for about that. A default is provided for the buffer size.

It will return a Web Audio Script Processing Node, which can be connected to any other Web Audio Node on the graph.

Simple use, generate a tone:

var master = new webkitAudioContext();

var jsynth = require('jsynth-ww')
;

/* 
  the following returns the function that will be used for audio process.  
  It is encapsulated in a function for scoped variable definitions.
  This is because the whole thing is going in a webworker scope.
*/

var sineGenerator = function (){
  var tau = Math.PI * 2;
  var f = 444
  return function(time, index, input){
    return Math.sin(time * tau * f)
  }
}

var synth = jsynth(master, sineGenerator, 4096); // returns a web audio node

synth.connect(master.destination)

// later, change the function
synth.update(newGeneratorFunction)

Your function will be called with the following arguments:

  • Time, in seconds (float)
  • Sample index (integer)
  • Input sample (float), MONO, this will be zero if there is no input. Use this if you are connecting other web Audio Api Nodes to this one.

You function should return a float between [-1, 1]-ish, but don't be afraid to multiply amplitudes.

usage

npm install jsynth

Mobile Safari

On mobile safari webkit (iOS), you can only initiate web audio API sounds from within a user event context, such as a click.

Example

to run the example, use opa

npm install -g watchify opa

(watchify is browserify + file a file watcher) Then:

git clone [email protected]:NHQ/jsynth.git
cd jsynth
opa -e example.js -o public/bundle.js 

open your browser to http://localhost:11001