Re: new to sound
Re: new to sound
- Subject: Re: new to sound
- From: Kurt Revis <email@hidden>
- Date: Sun, 17 Nov 2002 22:15:37 -0800
On Sunday, November 17, 2002, at 09:52 PM, papi wrote:
I'm looking for documentation and/or sample code to help me get
a leg-up on audio processing under MacOSX.
You should do two things:
1. Get the latest CoreAudio SDK, if you haven't already. You'll need
to get an ADC account for this (don't worry, it's free).
http://connect.apple.com
2. Take a look at the examples in /Developer/Examples/CoreAudio.
Are there any OSX-specific samples "out there" that would demonstrate
how to create PCM data and play it through the speakers?
The simplest one is here:
/Developer/Examples/CoreAudio/Services/DefaultOutputUnit
You probably should look at the code in UsingDefaultNoAC.cpp first.
So far it looks like I'll want to build an AUGraph of AudioUnits. Then
call HAL either implicitly through the last AudioUnit node of the
graph,
or explicitly somehow.
If you just use the DefaultAudioOutput AU, you don't need to explictly
deal with the HAL. Also, if you are only using one AU, you don't have
to build a graph of them.
--
Kurt Revis
email@hidden
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