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Re: Audio-ISSUE-42 (AudioParamSampling): AudioParam sampling is undefined [Web Audio API]

From: olivier Thereaux <olivier@thereaux.net>
Date: Fri, 25 May 2012 10:25:31 +0100
Message-Id: <2E5B51EE-F6B6-43C8-84FC-02F5DFA21C67@thereaux.net>
To: Audio Working Group <public-audio@w3.org>
This issue is now Pending Review, per https://dvcs.w3.org/hg/audio/rev/0f614b03b8cb

Olivier

On 15 May 2012, at 15:43, Audio Working Group Issue Tracker wrote:

> Audio-ISSUE-42 (AudioParamSampling): AudioParam sampling is undefined [Web Audio API]
> 
> http://www.w3.org/2011/audio/track/issues/42
> 
> Raised by: Philip Jägenstedt
> On product: Web Audio API
> 
> It is not defined how the AudioParam values (ramps or AudioNode input) are sampled. These approaches would yield hugely different results:
> 
> * Sample-and-hold at the beginning of each processing buffer (if they exist in the implementation).
> * Correct downsampling with low pass filtering to below the Nyquist frequency for each processing buffer. This could turn a 20KHz signal into silence.
> * Continuously per audio sample at the mixing level. Slow?
> 
> 
> 
Received on Friday, 25 May 2012 09:26:22 GMT

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