How to analyze the audio file recorded in audio queue services in iOS?

Question

I know the file path. How am I going to open it? I want the LPCM format like the one in the buffer when recording the audio.

Answer 1

You can use the iOS Extended Audio File Serveces API to read the uncompressed audio samples.

Answer 2

AudioGraph is a good, working example:

https://github.com/tkzic/audiograph