Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!asuvax!mcdphx!hrc!gtephx!corfmanr
From: corfmanr@gtephx.UUCP (Russ Corfman)
Newsgroups: comp.windows.ms.programmer
Subject: Sound/Music in Windows Apps
Keywords: SetVoice
Message-ID: <199@maillot_.gtephx.UUCP>
Date: 12 Feb 91 20:50:19 GMT
Organization: gte
Lines: 43

I want to start writing some windows applications that
make use of the speaker. I'm planning on starting off
with something simple like a cuckoo clock/alarm clock.
I've read what is in the reference manual for all the
music/sound functions such as SetVoiceNote, SetVoicePitch,
OpenSound, etc. I am left with a number of questions.

1. How does windows allocate the sound resource? I know
   that there is only one speaker so I assume only one
   application can be using it at a time. How does that
   application reserve the speaker? How does the application
   know if the speaker is already being used?

2. Voice queues are used to place different notes and
   frequencies and such in. In one of the function 
   descripions in the reference manual, it said the
   first queue is queue "1". How many voice queues can
   there be? Is it unlimited? Another question, are the
   queues a system wide resource such as timers or
   are they just a single application's resource?

3. I could more or less follow what the documentation
   meant for (how to use) functions such as SetVoiceNote
   and SetVoicePitch, but I was lost on how to use 
   SetVoiceFrequency. Is there an easy way to figure
   out how the passed frequencies affect the sound? I 
   guess a table of what frequencies to use for common
   sounds such as sirens or bubbling water would be nice.
   Something to point me in the right direction.

4. The "Guide to Programming" and "Programming Windows"
   by Petzold have no mention or examples of making sounds.
   Does anybody know of a book or article that discusses
   this topic? Some example source code would be very
   helpful too.

Thanks,
-- 
Russell Corfman
AG Communication Systems; Phoenix, AZ
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Internet: gtephx!corfmanr@asuvax.eas.asu.edu
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