Re: Audio Unit with variable Latency (user-modifyable)
Re: Audio Unit with variable Latency (user-modifyable)
- Subject: Re: Audio Unit with variable Latency (user-modifyable)
- From: William Stewart <email@hidden>
- Date: Thu, 7 Jul 2005 11:00:46 -0700
On 06/07/2005, at 8:14 PM, Christian Buchner wrote:
Hi there.
I am in the process of creating an audio unit - in fact a MusicDevice
- mainly for use in GarageBand. I have come up with the idea of adding
a user-adjustable latency setting. This is to counter a delay induced
by sending MIDI data and the audio capturing process. This ensures a
good audio synchronization during playback (the MusicDevice controls
external hardware through MIDI and feeds back the audio).
I tried to return the current latency value in my GetLatency()
function of the audio unit - but GarageBand keeps using the initial
value that was reported after loading the AU while it was still
operating on default values - i.e. zero latency.
Is there a clean way to tell GarageBand - or any other AU host
application
- to re-evaluate a modified latency value and to adjust its audio
processing
accordingly?
You need to call
PropertyChanged - specifying global scope and the latency property ID
GB may not take notice of it, but that's a start.
Bill
--
mailto:email@hidden
tel: +1 408 974 4056
________________________________________________________________________
__
"Much human ingenuity has gone into finding the ultimate Before.
The current state of knowledge can be summarized thus:
In the beginning, there was nothing, which exploded" - Terry Pratchett
________________________________________________________________________
__
_______________________________________________
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