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: Mon, 2 Nov 2009 11:35:19 -0800
I still have no idea what you are measuring against such that would
allow you know that things are 10 samples late. Logic attempts to do
some compensation for latency, so it essentially masks away from you
what is really going on at the hardware level. What you regard as
"late" is the result of Logic's compensation.
So, you'd really need to test this outside of Logic where you can see
precisely what is going on at the hardware level before we can go any
further here.
On Oct 30, 2009, at 5:25 PM, Taylor Holliday wrote:
It's hard to say. There isn't enough context here. You say
everything is "10
samples or so late", but late as compared to what?. And, is it 10
samples
all the time? If not, what precisely is the variance?
You need to define better what you are measuring and how you are
doing it
before I can provide more information.
I'll try. In order to determine whether newly recorded audio is
properly synchronized with previously recorded audio, I hooked the
output of my duet into its input. Then recorded audio to a separate
track. The newly recorded audio is 10 samples late relative to the
audio being played back. The 10 samples seems to be a constant.
Here's a screenshot showing the waveforms:
http://wtholliday.org/recording_delay.jpg
Let me know what other info you need.
--
Jeff Moore
Core Audio
Apple
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Coreaudio-api mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden