Outputting Multichannel sound from stereo sources
Outputting Multichannel sound from stereo sources
- Subject: Outputting Multichannel sound from stereo sources
- From: "Simon Thorpe" <email@hidden>
- Date: Thu, 12 Aug 2010 13:21:29 +0200
- Importance: Normal
Hi,
I've got another question that has been puzzling me. I have a 7.1 home
theatre system and use iTunes to play music. To my knowledge, when playing
a stereo file, iTunes will only use two channels. Of course, I can use the
amplifier to add propriety surround sound to use all the channels. But
suppose that I want to use the Mac to control the sound layout. What are
the options?
Well, I know that I can use an application such as Audio Hijack Pro to add
all sorts of Audio Units to do processing. However, bizarrely, stereo to
multichannel surround sound doesn't seem to be at all standard.
Looking through the list of available AU plugins at (for example)
http://www.macmusic.org/software/cat.php/lang/en/id/7037/view/AU
there seem to be few modules that are not either (a) very expensive, or
(b) completely out of date.
SRSLabs does do a module for adding effects to iTunes playback
(http://www.srslabs.com/store/store/comersus_viewItem.asp?idProduct=18 )
but it only seems to process a stereo signal into another stereo signal.
Am I missing something? Is there some reason why iTunes couldn't just have
a spatialized sound output? Is there a simple solution out there? Has
anyone produced a user configurable Audio Unit that could be used to do
surround processing on iTunes playback?
Thanks in advance for any pointers
Simon Thorpe
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