(OscillatorDetune): Oscillator.detune attribute not defined

[olivierthereaux]

Originally reported on W3C Bugzilla ISSUE-17369 Tue, 05 Jun 2012 11:54:31 GMT
Reported by Philip Jägenstedt
Assigned to

Audio-ISSUE-83 (OscillatorDetune): Oscillator.detune attribute not defined [Web Audio API]

http://www.w3.org/2011/audio/track/issues/83

Raised by: Philip Jägenstedt
On product: Web Audio API

https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html#Oscillator

The behavior of the Oscillator detune attribute is not well defined. It seems superfluous, since the base frequency can simply be set to the desired (detuned) frequency instead of being calculated from frequency and detune.

Suggestion: drop the detune attribute.

[olivierthereaux]

Original comment by Chris Rogers on W3C Bugzilla. Wed, 10 Oct 2012 00:22:36 GMT

Fixed:
https://dvcs.w3.org/hg/audio/rev/cb14c7445a27

The .detune attribute is important because common synthesis algorithms require controlling both the base frequency and a pitch offset.

[olivierthereaux]

Original comment by Philip Jägenstedt on W3C Bugzilla. Fri, 12 Oct 2012 12:42:59 GMT

Question answered by computedFrequency(t) = frequency(t) * pow(2, detune(t) / 1200)

[padenot]

(This should have been set as closed).