W3C Audio Publications and Milestones

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Group Deliverables

Draft Specifications

The Audio WG is currently working on the following specification deliverables:

The Web Audio API

Edited by Chris Wilson (Google) and Paul Adenot (Mozilla).

Previously edited by Chris Rogers (Google).

Status: Public working draft. See the Editor's Draft for the very latest version


Edited by Jussi Kalliokoski (Invited Expert) and Chris Wilson (Google).

Status: Public Working Draft. See the Editor's Draft for the latest version

The Web Audio Processing: Use Cases and Requirements

Edited by Joe Berkovitz (Noteflight) and Olivier Thereaux (BBC).

Status: published as a Working-Group Note.

Finalised Specifications

The following deliverables are no longer being worked on.

The MediaStream Processing API

Edited by Robert O'Callahan (Mozilla Corporation) is now a Working Group Note, no longer worked on but used as input for the Web Audio API.

Member submissions and strawman proposals

The following documents have been presented to the group by some of its members. They may be under discussion but have not (yet) been agreed upon or published by the group.



According to the Audio Working group charter, we aim to reach the following milestones for our main deliverables:

Specification FPWD LC CR PR Rec
Web Audio API Dec 2011 Q4 2012 Q2 2013 Q4 2013 Q4 2013
Web MIDI API Q3 2012 Q1 2013 Q2 2013 Q3 2013 Q3 2013

Latest Estimates

Based on current progress, our updated estimates are:

Specification FPWD LC CR PR Rec
Web Audio API Dec 2011 Q1 2014 Q3 2014 Q1 2015 Q1 2015
Web MIDI API Oct 2012 Q1 2014 Q2 2014 Q3 2014 Q3 2014



Script Libraries

  • audionode.js by Corban Brook; adds the basic high-level functionality of the Web Audio API to the Audio Data API