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Path: utzoo!linus!philabs!cmcl2!seismo!rochester!srs!matt
From: matt@srs.UUCP (Matt Goheen)
Newsgroups: net.micro.mac
Subject: Make my Mac talk with no POPs
Message-ID: <185@srs.UUCP>
Date: Wed, 4-Dec-85 14:42:36 EST
Article-I.D.: srs.185
Posted: Wed Dec  4 14:42:36 1985
Date-Received: Sat, 7-Dec-85 16:36:22 EST
Distribution: net
Organization: S.R. Systems, Rochester NY
Lines: 20


    Has anyone tried to use the D/A converter on the Mac using PBWrite
to the sound driver in Free-Form mode?  I have it working fine but
I get a nasty "pop" at the end of every sound UNLESS the length of
the record is a mutiple of 1K.  Is this a bug in the Sound Driver?
Is this a bug in the Device Manager?

This can be really bad for the application I am working on where you
can select small portions of a waveform to play over the Macs speaker.
If the size is small, the resulting sound can be very short and the
"pop" at the end makes it difficult/impossible to understand what the
actual sound was.  Currently, I have to make the blocks in increments
of 1K and zero out the remainder of the block.  This works but is
rather ugly and inefficient when I have a whole continuous sound that
I have to break up and move around just to run it through the DA
converter.  Any help would be appreciated...

					Matt Goheen
					S.R. Systems
			    ...{seismo,allegra}!rochester!srs!matt