kAudioSessionMode_Measurement
Specify this mode if your app is performing measurement of incoming audio.
Declaration
var kAudioSessionMode_Measurement: Int { get }Discussion
When this mode is in use, the device does not perform automatic gain adjustment on incoming audio. For use with the kAudioSessionCategory_RecordAudio or kAudioSessionCategory_PlayAndRecord audio session categories. On devices with more than one built-in microphone, the primary microphone is used.
This mode is equivalent to the measurement mode provided in the AVFoundation framework.