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ios - AudioUnit inputCallback with AudioUnitRender ...
https://stackoverflow.com/questions/57852372/audiounit-inputcallback-with-audiounitrender-mismatch-between-audiobufferlist
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Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/1438430-audiounitrender
The AudioBufferList that you provide on input must match the topology for the current audio format for the given bus. The buffer list can be either of these two variants: If the mData pointers are non-null, the audio unit renders its output into those buffers If the mData pointers are null, the audio unit can provide pointers to its own buffers.
Apple Developer Documentation
https://developer.apple.com/documentation/coreaudiotypes/audiobufferlist
Overview The AudioBufferList structure provides a mechanism for encapsulating one or more buffers of audio data. It is used by functions in various Core Audio APIs, as described in Audio Converter Services, Audio Unit Component Services, and …
CMSampleBufferSetDataBufferFromAud… | Apple …
https://developer.apple.com/forums/thread/11418
Answers. I poked around some more and notice that when my AudioBufferList right before AudioUnitRender runs looks like this: bufferList->mNumberBuffers = 2, bufferList->mBuffers [0].mNumberChannels = 1, bufferList->mBuffers [0].mDataByteSize = 2048. mDataByteSize is numberFrames*sizeof (SInt32), which is 512 * 4.
The Audio Unit - Apple Developer
https://developer.apple.com/library/archive/documentation/MusicAudio/Conceptual/AudioUnitProgrammingGuide/TheAudioUnit/TheAudioUnit.html
The Audio Unit. When you develop an audio unit, you begin with the part that performs the audio work. This part exists within the MacOS folder inside the audio unit bundle as shown in Figure 1-2.You can optionally add a custom user interface, or view, as described in the next chapter, The Audio Unit View. In this chapter you learn about the architecture and …
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 ...
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