The Audio Working Group invites implementation of an updated Candidate Recommendation of Web Audio API. This specification describes a high-level Web API for processing and synthesizing audio in web applications. The primary paradigm is of an audio routing graph, where a number of AudioNode objects are connected together to define the overall audio rendering. The actual processing will primarily take place in the underlying implementation (typically optimized Assembly / C / C++ code), but direct script processing and synthesis is also supported.

Comments are welcome by 15 February 2021.

The EPUB 3 Working Group has published four First Public Working Drafts today for EPUB 3.3. This technology defines a distribution and interchange format for digital publications and documents. The EPUB format provides a means of representing, packaging, and encoding structured and semantically enhanced Web content — including HTML, CSS, SVG, and other resources — for distribution in a single-file container.

The specification represents the third major revision and, in particular, a revision of the EPUB 3.2 document published by the EPUB 3 Community Group. This new version of the specification is now on a W3C Recommendation Track.

The four documents published by the Working Group are:

• The EPUB 3.3 specification defines the authoring requirements for EPUB Publications and represents the third major revision of the standard.
• The EPUB 3.3 Reading Systems specification defines the conformance requirements for EPUB 3 Reading Systems — the user agents that render EPUB Publications.
• The EPUB Multiple-Rendition Publications 1.1 specification defines the creation and rendering of EPUB Publications consisting of more than one Rendition. This document is not on recommendation track.
• The EPUB 3 Overview gives a high level overview of the EPUB 3.3 specification aimed primarily at non-technical readers. This document is not on recommendation track.

The Working Group welcomes comments via the GitHub repository issues.