Re: Open source mixer AU proposal
Re: Open source mixer AU proposal
- Subject: Re: Open source mixer AU proposal
- From: Bill Stewart <email@hidden>
- Date: Fri, 8 Aug 2003 15:38:38 -0700
On Friday, August 8, 2003, at 01:15 PM, Robert Grant wrote:
Hi Chris,
That's interesting and would certainly provide a solution. A *big*
problem that I forgot to mention is that the Matrix mixer (and the
improved Stereo mixer) is not available for Jaguar and I'm not sure I
want to restrict a new product to Panther customers only.
I think the plan is actually to update these pieces on Jaguar systems
as well - I can confirm this for you shortly
I'd recommend that you use the MM if at all possible - we spend alot of
time optimisting this (and it also does metering :), and you can get
both panning and down-mixing volumes from the AudioFormat API - all in
all, it saves you alot of work
Bill
Thanks,
Robert.
On Friday, August 8, 2003, at 03:24 PM, Chris Rogers wrote:
Robert,
All of these features are very doable by connecting several matrix
mixers
together in the right way, along with the built-in lo-hi shelf and
parametric
EQ AudioUnits. Also, in Panther, the stereo mixer will mix
stereo sources (but not in the WWDC seed - sorry ;-)
Although, the matrix mixer may not present the controls in the way
you're
used to seeing them, it's fairly straightforward to write a "wrapper"
AudioUnit which internally uses matrix mixers, etc., publishing the
parameters and busses in exactly the way you describe...
Chris Rogers
Core Audio
Apple Computer
As I've written before :-) I'm not happy with my mixing options as
an AU host developer. The Stereo mixer is too basic and the new
Matrix mixer (which I guess we can discuss now that Bill has
mentioned it :-)) is too "matrix" for lack of better description.
What I'm looking for is a mixer that is somewhat akin to real-world
mixers. I want:
Stereo/mono inputs
per input:
input gain fader
input balance/pan (balance for stereo, pan for mono)
send levels
pre/post fader switches for the sends (not essential but nice to
have)
Some basic EQ (lo/mid/hi) would also be nice but not essential
multiple stereo effect send busses (say 4)
Effect Return busses if it's technically feasible (see below)
Stereo master out.
The way I see it working is that this mixer could be coupled with
the stereo mixer to provide a full featured mixing environment.
Seems easier than trying to embed the send effect loop within the
mixer - but if I'm wrong I'm happy to hear it :-)
As I've demonstrated here many times I'm not talented enough to
build this myself or even have much idea about how to get started.
So I'm interested in working on a SourceForge type project with a
BSD-type license (because I want to build commercial apps with it)
with a few others - I'd probably be able to fill in some of the
blanks :-). It wouldn't need a GUI I think because hosts would
happily provide their own (especially if it is often coupled with
the Stereo mixer).
Is anyone interested in helping out?
Thanks,
Robert.
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.
--
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
________________________________________________________________________
__
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.