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From: jp57+@andrew.cmu.edu (Jefferson Provost)
Newsgroups: comp.sys.mac.programmer
Subject: Simultaneous Sampled Sounds w/ System 7
Message-ID: <8c7M7sW00WBNE1N7Fv@andrew.cmu.edu>
Date: 30 Apr 91 14:40:56 GMT
Organization: Carnegie Mellon, Pittsburgh, PA
Lines: 33



Hi,

Have any of you had any success with getting two sampled sounds to be
mixed and played together with system 7.0?  

The new Sound Manager docs claim that the new sound manager has the
ability to play multiple channels of sampled sound simultaneously, but I
can't seem to get it to work.  I allocate a channel and play a sound,
and then, while it is still playing, I allocate another channel and play
another sound, but the second channel seems to overide the first channel
and the first sound gets cut off.   I'm playing the sounds with
SndPlayDoubleBuffer() (I need low level control), and I've tried various
initializations for the sound channels (initSRate22k, initNoSRC).  I've
also tried the first sound in the right stereo channel and the second
sound in the left stereo channel with the same result.

Has anyone gotten this to work, or found some convincing proof that it
definitely doesn't work?

Thanx,

Jeff

 

+-------------------------------------------+
|Jefferson Provost    | jp57+@andrew.cmu.edu|
| Psychology          |  (412) 268-3139     |
| Carnegie Mellon     |---------------------|
| Pittsburgh, PA 15213|-=-=-=-=-=-=-=-=-=-=-|
+-------------------------------------------+