"The EAP (Entertainment Audio Platform) package is used for audio post-processing (music DRC and stereo widening). AEP (Audio Enhancements Package) is a full duplex speech audio enhancement package including echo cancellation, background noise suppression, DRC, AGC, etc. Both EAP and AEP are implemented as a PulseAudio module. PulseAudio Policy Enforcement Point PulseAudio plugin to manage volume levels, re-route streams and eventually forcefully shutdown streams. Name PulseAudio PEP Purpose Monitors headsets/ headphones connection status "