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Re: Audio-ISSUE-70 (ConvolverNodeChannels): ConvolverNode channel mapping [Web Audio API]

From: Philip Jägenstedt <philipj@opera.com>
Date: Fri, 18 May 2012 19:55:41 +0200
To: public-audio@w3.org, "Audio Working Group Issue Tracker" <sysbot+tracker@w3.org>
Message-ID: <op.weimq3dksr6mfa@kirk>
On Wed, 16 May 2012 11:59:01 +0200, Audio Working Group Issue Tracker  
<sysbot+tracker@w3.org> wrote:

> Audio-ISSUE-70 (ConvolverNodeChannels): ConvolverNode channel mapping  
> [Web Audio API]
>
> http://www.w3.org/2011/audio/track/issues/70
>
> Raised by: Philip Jägenstedt
> On product: Web Audio API
>
> The buffer attribute is defined as "A mono or multi-channel audio buffer  
> containing the impulse response used by the convolver." However, it is  
> not defined at all how the channels in the impulse response should be  
> used, even in the case where it matches the number of channels in the  
> input. Possibly, a mono impulse response should be applied to all  
> channels, but beyond that it's hard to guess.

In <https://www.w3.org/2011/audio/track/issues/100> we suggested merging  
<https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html#Convolution-reverb-effect>  
(with diagram) into the ConvolverNode section, which looks like it would  
answer the above for at least a few of the possible combinations.

-- 
Philip Jägenstedt
Core Developer
Opera Software
Received on Friday, 18 May 2012 17:56:01 GMT

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