Re: synchronization of input and output
Re: synchronization of input and output
- Subject: Re: synchronization of input and output
- From: Jeff Moore <email@hidden>
- Date: Thu, 29 Oct 2009 15:09:21 -0700
Correlating the time of the input and the time of the output is done
using the time stamps that are provided by the various APIs. They
provide a time stamp for when the input data was acquired as well as a
time stamp for when the output data is going to hit the wire. Both
time stamps are from the same time line, so they are already
correlated and you can just subtract to get the number of sample
between them.
At any rate, it would help to know what API you are using and probably
a bit more about what you are trying to do to provide any more
specific help.
On Oct 29, 2009, at 3:00 PM, Taylor Holliday wrote:
How does a CoreAudio recording app ensure that newly recorded
material (i.e. an overdub) is sample-synchronized with previously
recorded material? Or more specifically: when recording how might one
determine to which output sample a given input sample corresponds?
--
Jeff Moore
Core Audio
Apple
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