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Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/1438430-audiounitrender
inNumberFrames The number of audio sample frames to render. ioData On input, the audio buffer list that the audio unit is to render into. On output, the audio data that was rendered by the audio unit. The AudioBufferList that you provide on input must match the topology for the current audio format for the given bus.
ios - AudioUnitRender Error -50 meaning - Stack Overflow
https://stackoverflow.com/questions/51836792/audiounitrender-error-50-meaning
I see the problem occurs when inNumberFrames parameter is odd length (1115 instead of 1114). I don't know how inNumberFrames changes from 1024 to 1114 or 1115 after interruption. Any ideas what influences this param? –
iOSのAudioUnitRender（）関数によって返されるオーディオデー …
https://stackfinder.jp.net/questions/53555156/what-is-the-maximum-value-of-audio-data-returned-by-audiounitrender-function-i
レンダリングコールバック関数でAudioUnitRender（）関数を使用して、iPhoneでマイクからオーディオデータをリアルタイムで取得しています err = AudioUnitRender(player->outputUnit, ioActioanFlags, inTimeStamp, 1, inNumberFrames, ioData);
AVAudioEngineでエコキャン実装 (with ... - skyplace
https://soranoba.net/programming/voice-porocessing-with-avaudioengine
AVAudioEngineでエコキャン実装 (with ManualRendering) iOS13からAVAudioEngineでVoiceProcessingIOを用いたエコーキャンセルが setVoiceProcessingEnabled (_:) によって簡単にできるようになりました。. とはいえ、iOS13以前のバージョンでもエコーキャンセルをできるようにしたいので ...
Getting couldn't render output unit -50 for cases using ...
https://github.com/alexbw/novocaine/issues/27
Device is fine but simulator always gives this error. Tried on Xcode 4.3 and 4.4 and on different MacBooks. Anyone else see this?
Decibel metering from an iPhone audio unit - Politepix
https://www.politepix.com/2010/06/18/decibel-metering-from-an-iphone-audio-unit/
Hello visitor! If Core Audio and iOS development is your cup of tea, you might also want to check out OpenEars, Politepix’s shared source library for continuous speech recognition and text-to-speech for iPhone and iPad development.It even has an API for defining rules-based recognition grammars dynamically as of version 1.7 – pretty neat! On to decibel metering:
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