- From: Chris Rogers <crogers@google.com>
- Date: Thu, 29 Mar 2012 10:58:11 -0700
- To: Matthew Paradis <Matthew.Paradis@bbc.co.uk>
- Cc: public-audio@w3.org
- Message-ID: <CA+EzO0=bAq4WmDc_VrOXtRAtPOi7E6BKCUuxyc3NhYPsP3eERA@mail.gmail.com>
On Wed, Mar 28, 2012 at 8:39 AM, Matthew Paradis <Matthew.Paradis@bbc.co.uk>wrote: > Hello! > > I apologise if this has already been answered. > > I am looking to put together some demonstrators to do real time decoding > of b format using the web audio api. > > The spec currently states that the maximum channels is 6 (to support 5.1). > Is this likely to be increased or can it be user defined. I'm looking at > some "with height" applications requiring 8 speakers. > Although more detail needs to be added to the specification, the intention is to be able to output as many channels as the output device supports. There's been a lot of work in the WebKit implementation to make this possible (quite far along, but still ongoing). So if you have a specific complex speaker arrangement (with height speakers, etc.) then, for example, you could take a B-format (four channel) encoded audio file, use an AudioChannelSplitter to split out the WXYZ channels, use a number of AudioGainNodes to setup a specific "decode" matrix, then use an AudioChannelMerger connecting to the multi-channel destination. Cheers, Chris > > Of course I may have completely misunderstood the channels situation > > Best > > Matt > > http://www.bbc.co.uk/ > This e-mail (and any attachments) is confidential and may contain personal > views which are not the views of the BBC unless specifically stated. > If you have received it in error, please delete it from your system. > Do not use, copy or disclose the information in any way nor act in > reliance on it and notify the sender immediately. > Please note that the BBC monitors e-mails sent or received. > Further communication will signify your consent to this. > > > >
Received on Thursday, 29 March 2012 17:58:41 UTC