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c++ - AudioOutputUnitStart very slow - Stack Overflow
https://stackoverflow.com/questions/10141526/audiooutputunitstart-very-slow#:~:text=To%20start%20it%2C%20I%20would%20simply%20call%3A%20OSErr,%28m_toneUnit%29%3B%20When%20done%3A%20OSErr%20err%20%3D%20AudioOutputUnitStop%20%28m_toneUnit%29%3B
Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/1439763-audiooutputunitstart
Starts an I/O audio unit, which in turn starts the audio unit processing graph that it is connected to. Availability. iOS 2.0+. macOS 10.0+. Mac Catalyst 13.0+. tvOS 9.0+. Framework. Audio Toolbox. On This Page.
ios - AudioOutputUnitStart failed with OSStatus = -66637 ...
https://stackoverflow.com/questions/35936989/audiooutputunitstart-failed-with-osstatus-66637-how-to-print-osstatus-from-c
AudioOutputUnitStart failed with OSStatus = -66637 (How to print OSStatus from c++) Ask Question Asked 5 years, 10 ... com but there is no info about -66637(in all types of conversion) Also I have tried macerror, but there are no codes for iOS. Could someone help to find what means -66637? And logs in our project was done in printf format, so I ...
ios - Why does AudioOutputUnitStart() fail with return ...
https://stackoverflow.com/questions/27892712/why-does-audiooutputunitstart-fail-with-return-code-500
Sets properties of an AVAudioSession. Activates the AVAudioSession. Instantiates an audio component instance. Sets properties of the audio unit, eg. a callback function and an AudioStreamDescription. Initializes the audio unit. But the program failes to start the recording - the AudioOutputUnitStart function failes with return code -500.
AudioOutputUnitStart fail with ret… | Apple Developer …
https://developer.apple.com/forums/thread/686006
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Important: iOS 12.4 IAA bug
https://drop.michael.tyson.id.au/1564381336/mail.html
You should test your app on iOS 12.4 and make sure it's working right. Under iOS 12.4, any IAA node app (or Audiobus-compatible app) that records from the audio input will fail to start its audio unit when launched into the background via Inter-App Audio or Audiobus. AudioOutputUnitStartwill return …
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