Retired Document

Important: This sample code may not represent best practices for current development. The project may use deprecated symbols and illustrate technologies and techniques that are no longer recommended.

Relevant replacement documents include:

http://developer.apple.com/library/mac/samplecode/sc2195/Introduction/Intro.html#//apple_ref/doc/uid/DTS40013969

AudioUnitInstrumentExample

Last Revision:	Version 1.2, 2012-10-10 Updated for Mac OS X 10.7 (Full Revision History)
Build Requirements:	Mac OS X v10.7 or later
Runtime Requirements:	Mac OS X v10.7 or later

This is an implementation of a sin wave synth using AUInstrumentBase classes.

It illustrates a basic usage of these classes.

It artificially limits the number of notes at one time to 12, so the note-stealing algorithm is used - you should know how this works!

Most of the work you need to do is defining a Note class (see TestNote). AUInstrument manages the creation and destruction of notes, the various stages of a note's lifetime.

Alot of printfs have been left in (but are if'def out). These can be useful as you figure out how this all fits together. This is true in the AUInstrumentBase classes as well; simply define DEBUG_PRINT to 1 and this turns all this on.

The project also defines CA_AUTO_MIDI_MAP (OTHER_C_FLAGS). This adds all the code that is needed to map MIDI messages to specific parameter changes. This can be seen in AU Lab's MIDI Editor window.

CA_AUTO_MIDI_MAP is implemented in AUMIDIBase.cpp/.h