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Re: Audio-ISSUE-76 (BiquadFilterNode): BiquadFilterNode is underdefined [Web Audio API]

From: Raymond Toy <rtoy@google.com>
Date: Wed, 16 May 2012 08:57:05 -0700
Message-ID: <CAE3TgXHzfz+7t-_vdJBFAGyqgE4VkaJJ0GRuafzm=dPQCfrUvQ@mail.gmail.com>
To: Audio Working Group <public-audio@w3.org>
On Wed, May 16, 2012 at 5:30 AM, Audio Working Group Issue Tracker <
sysbot+tracker@w3.org> wrote:

> Audio-ISSUE-76 (BiquadFilterNode): BiquadFilterNode is underdefined [Web
> Audio API]
>
> http://www.w3.org/2011/audio/track/issues/76
>
> Raised by: Philip Jägenstedt
> On product: Web Audio API
>
>
> https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html#BiquadFilterNode
>
> 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.
>
>
>
The paragraph above section 4.21.1 gives a reference (
http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt) Is that enough
information to implement the filters?

Ray
Received on Wednesday, 16 May 2012 15:57:42 GMT

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