Sort by
Title |
Sort by
Topic |
Sorted by
Date |
|
The Default Output Audio Units
(HTML)
QA1577: Describes the Mac OS X output audio units and their purposes.
|
Core Audio |
2008-08-21
|
|
How do I create a QuickTime movie from PCM audio samples in memory?
(HTML)
QA1539: How to create a QuickTime movie from PCM audio samples in memory
|
QuickTime |
2007-08-29
|
|
AudioConverter: How do I know when I am done?
(HTML)
QA1532: Describes how to correctly signal AudioConverter when a conversion is completed.
|
Core Audio |
2007-08-23
|
|
How to handle kAudioUnitProperty_MaximumFramesPerSlice
(HTML)
QA1533: Illustrates how to use the kAudioUnitProperty_MaximumFramesPerSlice property
|
Core Audio |
2007-07-16
|
|
Unable to select input device in AU Lab
(HTML)
QA1526: AU Lab only supports physical device singletons.
|
Core Audio, Hardware & Drivers |
2007-05-17
|
|
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
|
Carbon |
2007-02-06
|
|
Standard Audio - Parsing the kQTSCAudioPropertyID_CodecSpecificSettingsArray property
(HTML)
QA1437: Discusses how to parse the kQTSCAudioPropertyID_CodecSpecificSettingsArray property returned from StdAudio. Also see Q&A 1390.
|
QuickTime |
2006-11-30
|
|
Standard Audio - The CodecSpecificSettingsArray and MagicCookie properties
(HTML)
QA1390: Discusses Core Audio AudioConverter configuration with StdAudio, specifically the CodecSpecificSettingsArray property.
|
QuickTime |
2006-11-16
|
|
Standard Audio - Setting output ASBD returns badFormatErr
(HTML)
QA1489: Discusses why badFormatErr may be returned from Standard Audio
|
Core Audio, QuickTime |
2006-11-15
|
|
MovieAudioExtraction - Extracting all available audio samples
(HTML)
QA1481: Describes how to correct for MovieAudioExtraction missing some audio samples at the end of audio files.
|
QuickTime |
2006-07-18
|
|
QuickTime Audio - Retrieving the correct audio format bit depth value
(HTML)
QA1477: Discusses how to retrieve accurate audio format bit depth.
|
QuickTime |
2006-05-17
|
|
Changing the volume of audio devices
(HTML)
QA1016: Demonstrates volume controls for audio devices
|
Carbon, Core Audio |
2006-05-02
|
|
CoreAudio Overload Warnings
(HTML)
QA1467: Describes CoreAudio overload warnings what they mean and how to avoid them.
|
Carbon, Cocoa, Core Audio, Performance |
2006-03-29
|
|
MovieAudioExtraction - Ensure a Movie is fully loaded before starting an extraction session
(HTML)
QA1469: Describes the importance of making sure a Movie is fully loaded before extracting audio.
|
QuickTime |
2006-03-29
|
|
Using NSSound with CoreAudio on Mac OS 10.3.x
(HTML)
QA1394: Workaround the NULL input buffers in a Core Audio IOProc callback when using NSSound by using AudioDeviceAddIOProc
|
Cocoa, Core Audio |
2006-03-29
|
|
The "packages" node in the device tree
(HTML)
HW90: Describes the "packages" node in the Open Firmware device tree.
|
Hardware & Drivers |
2006-02-22
|
|
QuickTime Audio - Easy Frequency Level Metering with MovieAudio APIs
(HTML)
QA1459: Describes how to perform frequency band level metering using MovieAudio metering APIs.
|
QuickTime |
2006-01-26
|
|
Sound Manager Codec support in QuickTime 7
(HTML)
QA1448: Describes QuickTime 7 support for constant bitrate and variable bitrate Sound Manager codecs
|
QuickTime |
2005-10-26
|
|
Determine the version of an Audio Unit
(HTML)
QA1408: Determine the version of an Audio Unit
|
Core Audio |
2005-03-07
|
|
Obtaining the name of an external MIDI Device from a MIDI Endpoint
(HTML)
QA1374: Get the names of external MIDI Devices from MIDI Endpoints.
|
Hardware & Drivers, MIDI |
2004-12-01
|
|
Avoiding Pauses When Looping Audio files with QuickTime
(HTML)
QA1371: Demonstrates how to avoid pauses when looping audio files with QuickTime
|
Games |
2004-09-08
|
|
Available FireWire Isochronous Bandwidth
(HTML)
QA1356: Discusses attempting to "pre-flight" an isochronous bandwidth allocation request by reading the currently available bandwidth.
|
Hardware & Drivers |
2004-07-07
|
Generating an NMI Without a Programmer's Switch
(HTML)
( )
QA1264: Explains how to generate a non-maskable interrupt (NMI) on CPUs without programmer's switches.
|
Hardware & Drivers |
2004-04-26
|
|
Signaling the end of data when using AudioConverterFillComplexBuffer
(HTML)
QA1317: How to signal the end of data when using AudioConverterFillComplexBuffer to convert audio data.
|
Core Audio |
2004-04-26
|
|
Audio Unit Resizing
(HTML)
QA1343: Discusses the host's responsibilities when resizing Audio Units.
|
Core Audio |
2004-03-23
|
|
Use NSSound instead of NSMovie for audio only playback on Mac OS X 10.3 and greater
(HTML)
QA1335: Why using NSSound may be a better choice than using NSMovie for audio only playback.
|
Cocoa, Core Audio |
2004-02-04
|
|
Music Player Sequence Destinations
(HTML)
()
QA1330: Provides clarification on MIDI Endpoints and assigning MIDI data flow.
|
MIDI |
2004-01-15
|
|
AudioDevice sample rates
(HTML)
QA1196: Getting, setting and converting sample rates with Audio Devices.
|
Core Audio |
2003-12-09
|
|
AUGraphs and AudioUnit connections
(HTML)
QA1174: Discusses AudioUnit connection issues when using more than one AudioUnit or an AUGraph.
|
Core Audio |
2003-12-09
|
|
Installing an I/O Kit KEXT Without Rebooting
(HTML)
QA1319: Describes the state of the art of installing I/O Kit kernel extensions (KEXTs) without requiring a restart.
|
Hardware & Drivers |
2003-10-28
|
|
How to handle audio data with magic cookie information
(HTML)
QA1318: How to handle sound files with magic cookies when using an AudioConverter.
|
Core Audio |
2003-10-22
|
|
Retain Counts of io_object_t Objects in IOKit.framework
(HTML)
()
QA1195: Distinguishes between the retain counts of an I/O Kit kernel object and its io_object_t user space proxy.
|
Hardware & Drivers |
2002-09-04
|
|
Disabling a Processor on a Multiprocessor System
(HTML)
()
QA1141: Describes how to disable a processor on a multiprocessor system for testing purposes.
|
Performance |
2002-05-22
|
|
IODeviceTree & the IORegistry
(HTML)
()
QA1120: Describes the IODeviceTree plane in the Mac OS X IORegistry.
|
Hardware & Drivers |
2002-02-13
|
|
IOKit Framework Headers
(HTML)
()
QA1107: Describes the differences between the headers in IOKit.framework and the I/O Kit headers in Kernel.framework.
|
Hardware & Drivers |
2002-01-15
|
|
HID Manager Event Data Underruns
(HTML)
QA1038: Explains how to correctly handle HID Manager event queue data underruns.
|
Apple Applications |
2001-06-13
|
|
Is the Open Firmware device tree object oriented?
(HTML)
HW80: Discusses the object-oriented attributes of the Open Firmware device tree.
|
Hardware & Drivers |
1999-11-15
|
|
When to use PCMCIA, PC Card, and CardBus
(HTML)
HW77: Explains the differences between PCMCIA, PC Card, and CardBus.
|
Hardware & Drivers |
1999-11-15
|
|
Are the Name Registry device tree nodes unique?
(HTML)
Deprecated - HW64: Discusses whether Name Registry nodes copied from the Open Firmware device tree are unique.
|
Hardware & Drivers |
1999-10-11
|
|
Sample code for allocating an amount of dictionary space
(HTML)
HW71: Discusses the allocation and the setting of memory for Dictionary space in Open Firmware.
|
Hardware & Drivers |
1999-10-11
|
|
What is the "dump" word and how do I use it?
(HTML)
HW68: Describes the function of the Open Firmware word "dump" and how it can be used.
|
Hardware & Drivers |
1999-10-11
|
|
What numeric base is the default for the Open Firmware user interface?
(HTML)
HW65: Describes how the default numeric base used by the Open Firmware user interface is hexadecimal.
|
Hardware & Drivers |
1999-10-11
|
|
Synchronizing Sounds to Video
(HTML)
()
Deprecated - SND19: Enabling regular sound callbacks under Mac OS 9 and Sound Manager 4.0.
|
Carbon |
1999-10-05
|
|
Synchronous SysBeep
(HTML)
()
Deprecated - SND18: Obtaining a synchronous SysBeep with Sound Manager 3.1.
|
Carbon |
1999-10-05
|
|
MACE Restrictions
(HTML)
()
Deprecated - SND16: MACE algorithms only support the compression of 8-bit offset binary sound.
|
Carbon |
1999-06-08
|
|
Determining Open Firmware configuration variables
(HTML)
()
HW56: Discusses how to determine the Open Firmware variables on a system.
|
Hardware & Drivers |
1999-03-29
|
|
Expansion ROM device properties
(HTML)
()
HW50: Describes the Open Firmware properties that should be included in a boot device's expansion ROM.
|
Hardware & Drivers |
1999-03-29
|
|
Why did the name of the PCI bridge change?
(HTML)
()
HW59: Explains the name change of the PCI bridge to the generic name "pci" in Open Firmware.
|
Hardware & Drivers |
1999-03-29
|
|
Difference between using Restart or Shut Down in the Finder's Special menu in Open Firmware
(HTML)
()
HW47: Explains the differences between using Restart or Shut Down on Open Firmware
|
Hardware & Drivers |
1999-02-15
|
|
Playing QuickTime 3 Movie Sound Data
(HTML)
()
QTMTB50: Explains why a movie's sound data can continue to play longer than video data.
|
QuickTime |
1998-11-09
|
|
Capturing Speech Manager Output
(HTML)
()
Deprecated - SND15: Capturing the output from the Speech Synthesis Manager to a file.
|
Carbon |
1998-05-18
|
|
Recording Compressed Sounds
(HTML)
()
Deprecated - SND14: Sound Manager and sound input driver compression options are limited to allow interrupt time recording.
|
Carbon |
1998-04-12
|
|
siMonitorSource Selector
(HTML)
()
Deprecated - SND13: Using the sound output siMonitorAvailable, and siMonitorSource selectors.
|
Carbon |
1998-04-12
|
|
siOSTypeInput Selectors
(HTML)
()
Deprecated - SND12: The use of siOSTypeInputSource, and siOSTypeInputAvailable selectors and extracting the siOSTypeInputAvailable OSTypes returned.
|
Carbon |
1998-04-12
|
|
Setting Audio Input Gain
(HTML)
()
Deprecated - SND11: Setting audio input gain under Mac OS 8.1.
|
Carbon |
1998-02-10
|
|
Selecting a specific sound input source
(HTML)
()
Deprecated - SND10: Using the sound input driver to select specific sound input sources.
|
Carbon |
1998-01-16
|
|
siOSTypeInputAvailable Format
(HTML)
()
Deprecated - SND09: The format of the data returned by the siOSTypeInputAvailable selector is SoundInfoList.
|
Carbon |
1998-01-16
|
|
Making Input Gain Setting Changes
(HTML)
()
Deprecated - SND01: Changing the input gain setting on older Power Macs before recording.
|
Carbon |
1996-06-01
|
|
siActive Channels Unsupported on Some Power Macs
(HTML)
()
Deprecated - SND03: siActive Channels is unsupported on some older PowerMacs (siUnknownInfoType returned by SPBGetDeviceInfo).
|
Carbon |
1996-06-01
|
|
PCI Type 1 Cycles
(HTML)
HW26: Describes the circumstances when the PowerMac generates a Configuration Type 1 command.
|
Hardware & Drivers |
1995-07-15
|
