Re: Sample-accurate parameter automation? Possibe at all with AUs?
Re: Sample-accurate parameter automation? Possibe at all with AUs?
- Subject: Re: Sample-accurate parameter automation? Possibe at all with AUs?
- From: Greg X <email@hidden>
- Date: Tue, 11 Mar 2008 10:56:16 -0700 (PDT)
Mr. Sagan!
Thank you for your reply.
What is your answer to my other questions?
For example:
Why are AU examples calling GetParameter only at the
beginning of the render process?
Why is it acceptable? ..why is it a widely used
approach?
Regards,
Greg1X
p.s.: Sorry for sending this email to your private
address initially.
--- Jeremy Sagan <email@hidden> wrote:
> Take a look at AudioUnitScheduleParameters.
>
> Hosts like Metro call this to schedule sample
> accurate parameter
> automation. What the AU does with it is, of course,
> up to the AU.
>
> Jeremy Sagan
> Sagan Technology
> www.sagantech.biz
>
>
> On Mar 11, 2008, at 6:00 AM, Greg X wrote:
>
> > Hi!
> >
> > I want to support sample-accurate parameter
> automation
> > of my MusicDeviceBase based AU.
> > All of the examples I saw are calling GetParameter
> > once at the beginning of the render process.
> ..which
> > is very far from being accurate.
> >
> > Are there some kind of parameter buffers? Like the
> > input buffers for incoming audio.
> > I feel uncomfortable with calling series of
> > "GetParameter"s for each sample. It feels to be a
> huge
> > performance hit to the DSP. Why not using
> parameter
> > buffers instead?
> >
> > I'm also wondering why are all of those examples
> using
> > such an inaccurate parameter handing? (when
> someone is
> > using 512 samples long processing buffers, it
> doesn't
> > mean that he wants to get inaccurate parameter
> > handing)
> >
> > Are hosts providing such inaccurate parameter
> > automation, or what is the reason?
> >
> > Thanks for your time,
> > Greg1X
>
>
>
>
>
>
____________________________________________________________________________________
Be a better friend, newshound, and
know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
_______________________________________________
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