952980 - distortion and clicks when changing DelayNode delayTime

Status: RESOLVED DUPLICATE of bug 1441500

(Core :: Web Audio, defect, P3)

Description

[Karl Tomlinson (:karlt)]

STR:
1) load url
2) Click "Change Delay" as few times in the first 10 seconds, and listen to transitions to and from silence.
3) Click "Change Delay" as few times after the first 10 seconds, and listen to transitions to and from different phases in the sine wave.

Expected:
"When the delay time is changed, the implementation must make the
transition smoothly, without introducing noticeable clicks or
glitches to the audio stream."
Something like [2].

Actual:
There are huge frequency shifts and cracks, worse than having a transition time of zero [3].

[2] http://people.mozilla.org/~karlt/delay-changes-cross-fade.html
[3] http://people.mozilla.org/~karlt/delay-changes-sudden.html

Comment 1

[Bulk Bug Changes for mreavy's org]

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

Comment 2

[Paul Adenot (:padenot)]

Hrm we've lost the test cases here. Karl, do you know if we're doing the right thing here?

Comment 3

[Karl Tomlinson (:karlt)]

The spec has changed to now expect clicks from instantaneous delay changes.
The frequency shifts have beeen fixed for bug 1441500.