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Technical Notes
System-level services in Mac OS X streamline the development process for audio developers, as well as for application developers who want to incorporate music and other audio media into their products. Core Audio provides native multichannel audio in a manner scalable for future high-resolution formats. The Audio Unit API provides a plug-in architecture for both DSP (audio in/audio out) and virtual instruments (MIDI in/audio out). MIDI services provide multiport MIDI capability.
Music & Audio Resources
A guided introduction and learning path for developers new to Mac OS X music and audio.  
Music & Audio Topics
Carbon
Programming interfaces for creating, processing, and playing high-quality sound content. 		 
Cocoa
Programming interfaces for creating, processing, and playing high-quality sound content. 		 
Core Audio
Frameworks and tools for audio and MIDI data manipulation, such as saving and playing audio data, converting audio data between formats, and recording and playing MIDI data.
Games
Programming interfaces for creating, processing, and playing high-quality sound in Mac OS X gaming software. 		 
QuickTime
A multiplatform, multimedia technology with programming interfaces for creating, processing, and playing high-quality sound content. 		 
View legacy technologies, including technologies, features, products, APIs, and programming techniques that are no longer supported or have been superseded.