问题
I am using AudioKit's AKNodeRecorder for recording audio.
While recording audio it generates CAF file in a temp directory. if we save it with exportAsynchronously it creates a new file with m4a extension in document directory.
The CAF file generates in temp directory is too big in size. 1 sec of audio takes 1 sec = 360000 bytes = 0.36 MB Disk space
while after exporting m4a file takes 1 sec = 32000 bytes = 0.032 MB Disk space
The m4a space is good for recording an audio. but the CAF file size is too big for long time recording.
I have to record 2.5 hrs of audio at one time, which will generate 3.6 GB of CAF file
Can we use less disk space while recording?
来源：https://stackoverflow.com/questions/49918260/audiokit-temporary-file-size-is-too-big