[Openal] Multi-Channel Extension

Daniel PEACOCK dpeacock at creativelabs.com
Wed Apr 11 10:41:28 PDT 2007





Hi RJ,

I'll answer both emails here.

Sending audio to specific speakers is not directly supported in OpenAL at
the moment (it would be a useful addition).   There are currently two
options ... play a multi-channel wave file using the Multi-Channel
extension (PC only, as far as I know), or use 3D positions to put the sound
in the right location to be rendered by a particular speaker.   The later
option is never going to be precise though because it is dependant upon the
speaker mode and configuration.

The Multi-channel extension is documented in the Programmer's Guide in the
latest PC OpenAL SDK ( available from http://developer.creative.com ).
The SDK includes some example source code that shows how to play a 5.1
WAVEFORMATEXTENSIBLE file.

Dan

Daniel Peacock
Custom Engineering Dept.
Creative Labs, Inc.
email : dpeacock at creativelabs.com
phone : (408) 546 6552

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             RJ                                                            
             <rahulj at darshan3d                                             
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             ensource.creative                                             
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                                       [Openal] Multi-Channel Extension    
                                                                           
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Hi Guys,
Can somebody provide me some pointers to the documentation of multi-
channel buffer extension.I have openAl programming guide as well as
specification document, but  nothing much is explained over there.
Any help will be deeply appreciated.
best regards
RJ

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