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iphone - How can I get AAC encoding with ExtAudioFile on ...
https://stackoverflow.com/questions/4956338/how-can-i-get-aac-encoding-with-extaudiofile-on-ios-to-work#:~:text=AudioStreamBasicDescription%20outputFormat%3B%20outputFormat.mFormatID%20%3D%20kAudioFormatMPEG4AAC%3B%20outputFormat.mSampleRate%20%3D%2044100%3B,a%20destination%20audio%20file%20with%20this%20output%20format.
Apple Developer Documentation
https://developer.apple.com/documentation/coreaudiotypes/audiostreambasicdescription
In Core Audio, the following definitions apply: An audio stream is a continuous series of data that represents a sound, such as a song.. A channel is a discrete track of monophonic audio. A monophonic stream has one channel; a stereo stream has two channels. A sample is single numerical value for a single audio channel in an audio stream.. A frame is a collection of time …
AudioStreamBasicDescription Struct (AudioToolbox ...
https://docs.microsoft.com/en-us/dotnet/api/audiotoolbox.audiostreambasicdescription
Audio packet stream description. ... Remarks. The audio stack processes audio as a stream of audio packets. This data structure is used to describe the contents of these audio packets and contains information like the sample rate used for the audio samples, the format of the individual audio packets, the number of channels in the packets and the bits per channel, and so on.
Decode AAC-LC (ADTS) framed from N ... - Apple Developer
https://developer.apple.com/forums/thread/18613
Is there a 'simple' way of decoding and playing AAC frames without going the coreaudio route? Is this even possible? I get ADTS frames from the network I put in NSData. Then I create a AudioStreamBasicDescription matching what's inside the ADTS header.
iphone - How can I get AAC encoding with ExtAudioFile …
https://stackoverflow.com/questions/4956338/how-can-i-get-aac-encoding-with-extaudiofile-on-ios-to-work
I need to convert a WAVE file into an AAC encoded M4A file on iOS. I'm aware that AAC encoding is not supported on older devices or in the simulator. I'm testing that before I run the code. But I still can't get it to work. I looked into Apple's very own iPhoneExtAudioFileConvertTest example and I thought I followed it exactly, but still no luck!
iphone - Writing buffer of audio samples to aac file using ...
https://stackoverflow.com/questions/12569015/writing-buffer-of-audio-samples-to-aac-file-using-extaudiofilewrite-for-ios
I am trying to write a simple buffer of audio samples to a file using ExtAudioFileWrite in AAC format. I have achieved this with the code below to write a mono buffer to a .wav file - however, I cannot do this for stereo or for AAC files which is what I want to do. Here is what I have so far...
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