1893939 - Audio crackling when AudioContext is used

Status: UNCONFIRMED

(Core :: Audio/Video: cubeb, defect)

Description

[john.morahan]

Attachment: fenix-AudioContext.flac

Steps to reproduce:

Visit https://mdn.github.io/webaudio-examples/audio-basics/ and tap the play button on the boombox.

Actual results:

The sound plays, but with an annoying crackle.

Expected results:

It should sound the same as it does on desktop Firefox, or on Chrome for Android - a clear sound with no crackling.

Attached a short recording of the sound in Fenix, followed by the same sound on the same device (Fairphone 4) and recording setup on Chrome for comparison

Comment 1

[Jim Mathies [:jimm]]

Maybe Paul has some ideas.

Comment 2

[Paul Adenot (:padenot)]

Buffer size is likely too low. John, can you get us a performance profile on that device? https://profiler.firefox.com/docs/#/./guide-profiling-android-directly-on-device explains how, nothing to install, but please make sure to select the preset "Media". Paste the link here when that's done.

Comment 3

[john.morahan]

https://profiler.firefox.com/public/fkwy0ktp86d50ts4c0g1dk85eqc5hffs9tcsgkr

Comment 4

[john.morahan]

In case it matters: the screen locked at about 30 seconds in, and the crackling seemed to get significantly worse

Comment 5

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:padenot, could you have a look please?

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