1137011 - WebFMSynth doesn't work well

Status: NEW

(Core :: Web Audio, defect, P3)

Description

[Robert O'Callahan (:roc) (email my personal email if necessary)]

http://www.taktech.org/takm/WebFMSynth/ doesn't work well in Firefox.

Clicking on the keyboard produces the wrong notes. This is bug 69787.

Running in a Firefox session with other apps open, we glitch a lot (dropouts). I guess this is because it produces audio on the main thread using a ScriptProcessorNode, though sometimes it seems to get stuck so there may be a bug there. It's a lot better when you run it in its own Firefox instance.

But even running in its own Firefox instance, there's crackling that sounds like clipping, so there might be another bug there.

Comment 1

[Paul Adenot (:padenot)]

We should try to repro once bug 1157137 lands. I haven't looked at the code, though.

Comment 2

[Maire Reavy [:mreavy]]

Roc -- could you retry this, given bug 1157137 has landed and all the perf work we've done?  Thanks!

Comment 3

[Robert O'Callahan (:roc) (email my personal email if necessary)]

It's a lot better. However, often notes fail to play and a couple of times I got into a state where it seemed completely broken, so I think there are still bugs (though they could be app bugs).

Comment 4

[Bulk Bug Changes for mreavy's org]

Mass change P2->P3 to align with new Mozilla triage process.