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Article View: comp.sys.acorn.tech
Article #181

Escape and the Sound System.

#181
From: Philip R. Banks
Date: Mon, 14 Sep 1992 05:13
24 lines
1725 bytes
   Another question for the Acorn bods out there. When Escape is enabled
under RO2 and pressed all sound synthesis stops (well on channel 1 anyway.).
But how does this get signaled to the voice synthesis code? Usual behavior
would, I would have thought, be to send the voice synthesis code a 'GateOff'
call indicating synthesis was to halt immediately (and allowing 'smart'
code to do a nice quick fade out to avoid clicks.). But from my studies it
appears this is not happening...

   Now this is rather annoying as my sound code maintains a current address
pointer to indicate how far through a sample it is. Defined behavior is that
when the sample finishes this resets to zero to indicate that. However with
my voice code being unaware that synthesis has halted the pointer gets left
at the last address filled and consequently doesn't do as it should.

   Anyway I can fix this?

    Philip

--
Philip R. Banks  Syntax: mail < banks_p@kosmos.wcc.govt.nz >            @@@@@/|
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And who are we to criticize or scorn the the things that they do?       @@/---|
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Newsgroups: comp.sys.acorn.tech
Subject: Escape and the Sound System.
Message-ID: <2iawG4j021n@khantazi.welly.gen.nz>
From: banksie@khantazi.welly.gen.nz (Philip R. Banks)
Date: Mon, 14 Sep 1992 17:13:02 +1200
Reply-To: banks_p@kosmos.wcc.govt.nz
Organization: My Arc.
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