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Leopard Technical Q&As: Carbon
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 is available to Carbon applications. It 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 allow for multiport MIDI capability.

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Avoiding Pauses When Looping Audio files with QuickTime (HTML)
QA1371: Demonstrates how to avoid pauses when looping audio files with QuickTime
2004-09-08
Capturing Speech Manager Output (HTML) (日本語 HTML)
Deprecated - SND15: Capturing the output from the Speech Synthesis Manager to a file.
1998-05-18
Changing the volume of audio devices (HTML)
QA1016: Demonstrates volume controls for audio devices
2006-05-02
CoreAudio Overload Warnings (HTML)
QA1467: Describes CoreAudio overload warnings what they mean and how to avoid them.
2006-03-29
The header file 'alut.h' is missing from the OpenAL framework. (HTML)
QA1504: ALUT headers were removed from OpenAL.framework with the Xcode 2.4. This Q&A describes how to regain access to those system-supplied symbols
2007-02-06
MACE Restrictions (HTML) (日本語 HTML)
Deprecated - SND16: MACE algorithms only support the compression of 8-bit offset binary sound.
1999-06-08
Making Input Gain Setting Changes (HTML) (日本語 HTML)
Deprecated - SND01: Changing the input gain setting on older Power Macs before recording.
1996-06-01
Recording Compressed Sounds (HTML) (日本語 HTML)
Deprecated - SND14: Sound Manager and sound input driver compression options are limited to allow interrupt time recording.
1998-04-12
Selecting a specific sound input source (HTML) (日本語 HTML)
Deprecated - SND10: Using the sound input driver to select specific sound input sources.
1998-01-16
Setting Audio Input Gain (HTML) (日本語 HTML)
Deprecated - SND11: Setting audio input gain under Mac OS 8.1.
1998-02-10
siActive Channels Unsupported on Some Power Macs (HTML) (日本語 HTML)
Deprecated - SND03: siActive Channels is unsupported on some older PowerMacs (siUnknownInfoType returned by SPBGetDeviceInfo).
1996-06-01
siMonitorSource Selector (HTML) (日本語 HTML)
Deprecated - SND13: Using the sound output siMonitorAvailable, and siMonitorSource selectors.
1998-04-12
siOSTypeInput Selectors (HTML) (日本語 HTML)
Deprecated - SND12: The use of siOSTypeInputSource, and siOSTypeInputAvailable selectors and extracting the siOSTypeInputAvailable OSTypes returned.
1998-04-12
siOSTypeInputAvailable Format (HTML) (日本語 HTML)
Deprecated - SND09: The format of the data returned by the siOSTypeInputAvailable selector is SoundInfoList.
1998-01-16
Synchronizing Sounds to Video (HTML) (日本語 HTML)
Deprecated - SND19: Enabling regular sound callbacks under Mac OS 9 and Sound Manager 4.0.
1999-10-05
Synchronous SysBeep (HTML) (日本語 HTML)
Deprecated - SND18: Obtaining a synchronous SysBeep with Sound Manager 3.1.
1999-10-05