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- Newsgroups: comp.sys.mac.programmer
- Path: sparky!uunet!spool.mu.edu!sdd.hp.com!wupost!gumby!kzoo!k044477
- From: k044477@hobbes.kzoo.edu (Jamie R. McCarthy)
- Subject: Re: Background your Sound!
- Message-ID: <1992Dec11.215300.2937@hobbes.kzoo.edu>
- Organization: Kalamazoo College
- References: <1992Dec09.173722.69189@uu0570.foggybottom.com> <1g7vhfINN146@agate.berkeley.edu> <ingemar.724077533@isy>
- Date: Fri, 11 Dec 1992 21:53:00 GMT
- Lines: 22
-
- ingemar@isy.liu.se (Ingemar Ragnemalm) writes:
- >
- >Speaking of asynchronous sound, what are the "rules" about several channels
- >open at once? I have tried to make two channels for sampled sounds on an
- >LC... I get "not enough hardware".
-
- I've heard this from other people, but I'll personally affirm that one
- can get two channels open on an LC. Maybe if you showed us your code?
-
- On my IIci, one "good-quality" channel takes about 18% of the CPU
- time. I think it's a trifle over 30% on the LC.
-
- "Good-quality" here means with both linear interpolation and drop-sample
- conversion. Jim Reekes has indicated, however, that one of these is
- currently unimplemented (drop-sample conversion, I think). He's also
- indicated that the CPU-time values returned by the S.M. are rather
- unreliable, so take the previous paragraph with a grain of salt.
- --
- Jamie McCarthy Internet: k044477@kzoo.edu AppleLink: j.mccarthy
- "Apple developers will still have access to System 7.1 through the
- monthly Developer CD series, but they may use it only for testing
- and development purposes." - AppleDirect, Nov/Dec 92
-