Speech, hearing, noise, intelligibility.pptx Microphone- characteristics,carbon microphone, dynamic microphone.pptx Loudspeaker- direct radiating type and horn type.pptx Environmental acoustics- noise criteria.pptx Environmental Acoustics- Speech interference level, acoustics calibrator.pptx sound level meter octave band ananlyser.pptx Environmental Acoustics- noise decible scale intensity pressure Architectural acoustics, underwater acoustics Fundamentals of Ultrasonic waves and applications Lec 4 digital electronics - interated circuit technology -characteristics of ic's Lec 3 digital electronics- read only memory Lec 2 digital electronics - random access memory Lec 1 digital electroinics - memory array, write read operations 
