Core Audio/Midi sync accuracy?
Core Audio/Midi sync accuracy?
- Subject: Core Audio/Midi sync accuracy?
- From: Eric Lee <email@hidden>
- Date: Fri, 03 Mar 2006 14:00:27 +0100
Hi,
I was wondering how accurately Core Audio/Midi are synced. I suppose
that this is somewhat dependent on the output hardware...
For example, if I schedule a PCM audio buffer to start playing back
at host time X, and a MIDI "note on" event to start also at the same
host time, how far out of sync will they actually be at the output?
There will be some difference, since they have to go through separate
output paths (the audio through the DAC and the MIDI through a
synthesizer). Also, the scheduled MIDI event has to be converted to
a MIDI timestamp at some point..?
Does anyone have an idea of a rough estimate for how much this
difference could be? Milliseconds, tens of milliseconds?
Thanks,
Eric
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