Bugzilla – Bug 17363
(BiquadFilterNode): BiquadFilterNode is underdefined
Last modified: 2013-04-03 08:17:33 UTC
Audio-ISSUE-76 (BiquadFilterNode): BiquadFilterNode is underdefined [Web Audio API]
Raised by: Philip Jägenstedt
On product: Web Audio API
The filter operation is undefined, with wording such as "standard second-order resonant lowpass filter with 12dB/octave rolloff." A lot more specificity is required.
Wikipedia is the reference for several of the filter modes. We could not find any mode that is implementable given the information provided.
Per discussion at Audio WG f2f 2013-03-26
We discussed how much of the maths should be specified for the BiquadFilterNode.
* remove the wikipedia links (they can be used in developer documentation)
* publish a stable version of RBJ's Audio Cookbook and refer to that
See - http://lists.w3.org/Archives/Public/public-audio/2013AprJun/0006.html