Contact emails
[email protected], [email protected]

Explainer
None


Specification
https://webaudio.github.io/web-audio-api/#dom-baseaudiocontext-renderquantumsize


Summary

AudioContext and OfflineAudioContext now take an optional renderSizeHint, which 
allows users to ask for a particular render quantum size when an integer is 
passed, to use the default of 128 frames if nothing or "default" is passed, or 
to ask the User-Agent to pick a good render quantum size if "hardware" is 
specified.



Blink component
Blink>WebAudio


Motivation

It is difficult and complex to write a web app when the audio processing block 
size does not match with the WebAudio render quantum size (128 sample-frames). 
Removing this restriction and making it customizable on AudioContext would 
enable easier development and more efficient audio processing.



Initial public proposal
None


TAG review
None


TAG review status
Not applicable


Risks




Interoperability and Compatibility

None


Gecko: No signal (https://github.com/WebAudio/web-audio-api/pull/2469) A 
Firefox developer wrote the specification change.

WebKit: No signal

Web developers: Positive 
(https://github.com/WebAudio/web-audio-api/issues/1503) Developers have 
requested a way to increase the render quantum size, and are looking forward to 
the feature being implemented.

Other signals:


WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that it 
has potentially high risk for Android WebView-based applications?

None




Debuggability

None



Is this feature fully tested by web-platform-tests?
No


Flag name on about://flags
None


Finch feature name
None


Non-finch justification
None


Requires code in //chrome?
False


Tracking bug
https://crbug.com/40637820


Estimated milestones

No milestones specified



Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5078190552907776?gate=5189508454416384


This intent message was generated by Chrome Platform Status.

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