ISSUE-38: (Bugzilla 17334) AudioParam.setTargetValueAtTime is misleading and underdefined

setTargetValueAtTime

(Bugzilla 17334) AudioParam.setTargetValueAtTime is misleading and underdefined

State:

CLOSED

Product:

Web Audio API

Raised by:

Philip Jägenstedt

Opened on:

2012-05-15

Description:

The naming of this function is misleading, since it does not in fact set the target value at the given time.

timeConstant is underdefined, what is the exponent? A "first-order filter (exponential)" is mentioned, but not clarified further.

Finally, it is not well defined what the difference to exponentialRampToValueAtTime is, but we suspect that setTargetValueAtTime is something like v=1-e-kt. The equations involving the 3 parameters should be included in the spec, normatively.

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Related emails:

1. [web-audio-api] (setTargetValueAtTime): AudioParam.setTargetValueAtTime is misleading and underdefined (#152) (from notifications@github.com on 2013-09-11)
2. Re: Summary of issues (from crogers@google.com on 2012-05-22)
3. Summary of issues (from mage@opera.com on 2012-05-22)
4. Re: Missing information in the Web Audio spec (from philipj@opera.com on 2012-05-16)
5. Audio-ISSUE-38 (setTargetValueAtTime): AudioParam.setTargetValueAtTime is misleading and underdefined [Web Audio API] (from sysbot+tracker@w3.org on 2012-05-15)

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