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Conference 7.286::atarist

Title:Atari ST, TT, & Falcon
Notice:Please read note 1.0 and its replies before posting!
Moderator:FUNYET::ANDERSON
Created:Mon Apr 04 1988
Last Modified:Tue May 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1433
Total number of notes:10312

757.0. "Is TWEETIE stereo?" by SICKO::PATTERSON () Thu Feb 01 1990 10:44

	I am thinking of getting the TWEETIE board.  I was wondering 
	if anyone out there can tell me if it is true stereo or just
	the same sound on two channels?  None of the things I have
	written have specified values for the left or the right
	channels so how does it work, any ideas?

	Jim Patterson
T.RTitleUserPersonal
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757.1different sound on each channelBAHTAT::REIDFri Feb 02 1990 07:456
    I believe that it splits the sound into three different voices and the
    you have the choice of which two voices you merge back together to
    leave you with a 2 channel (stereo effect). There was a review in a UK
    mag St User or ST format about September 1989.
    
    Regards.
757.2pseudo-stereoMGOI03::FALKENSTEINFri Feb 02 1990 11:1616
    
    I don't know nothing about Tweetie, but the soundchip of my 1040
    has three channels (I'm not sure, it's a long time ago when I did
    it. Could be two as well) which are mixed together to drive the
    monitor's speaker. I splitted the channels directly at the chip
    and guided them to two cinch outlets. Internaly I mixed them together
    again for the monitor with some resistors. Because each of the channels
    of the soundchip are programmable, you get a nice "pseudo"-stereo
    effect. Specially with some games like Silent Service, where the
    gun is on the left (in my configuration) and torpedos on the right.
    The sound of the engine comes through both speakers. The cinch outlets
    are connected to a small stereo amp b.t.w.
    
    Bernd