- Log statements
+ Log
!
+ Sampler Interface, implements getCurrentSample()
+ Player, Recorder implement Sampler
+ Respeaker uses Mapper
+ Renamed MicrophoneListener to AudioListener
+ Use 5x the background noise level for the speech threshold
+ PCMFile is a Sample, but can also directly handle audio data, ie. is an AudioListener
+ Rewrite of respeaking code

- Extracted Mapper from Respeaker, AudioRespeaker