Re: fIsMixable
Re: fIsMixable
- Subject: Re: fIsMixable
- From: BlazeAudio Developer <email@hidden>
- Date: Tue, 17 Jun 2003 14:42:01 -0700
Everybody, thank you for your input!!
I think I will stay away from the Hog mode.
However, I have related questions (perhaps I should start another
thread).
How does CoreAudio compare against ASIO (OS9) in terms of workable
latencies, say on a 500 MHz Dual G4, given everything else sort of equal!
Thanks.
Devendra.
At 02:08 PM 6/17/2003, Markus Fritze wrote:
On Dienstag, Juni 17, 2003, at 01:12 Uhr, James Chandler Jr wrote:
If just playing or recording a file, it might be desirable to
avoid float-int conversions.
But in this case performance is not an issue anyhow :-)
Logic does all it's internal processing in float (or even double, if
necessary). I would expect that every even half-professional audio
application does so, too. You don't have to deal with clipping and
you can do real math without converting (converting float->int is
extremely costly on a PowerPC!). How much effort is even a volume
control with clipping in integer math? It is one cycle in float...
BTW: On of CoreAudios real advantages _IS_ multi-client support and
the customers love it. Only because they _had_ to use ASIO under Mac
OS 9, doesn't mean that they prefer the old solution.
Ok, users don't like system beeps on their audio hardware, but they
can change that in the system preferences, so this is no longer a
problem.
I really would recommend not to deal with hog mode (BTW: we never
tested Logic with hog mode, because AFAIK no audio hardware supports
it :-), your tech support will be flooded (why is iTunes not working,
etc.)
MMM
--
Markus Fritze
Apple Computer, Inc. <
http://www.apple.com>
Senior Engineer - Audio/Music Applications
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