Passive radiator and system comprising the passive radiator
Passive radiator with mass elements
Passive secondary air muffler
Passive sound gathering apparatus
Passive speaker
Passive speaker system
Passive speaker system
Passive system for speech enhancement
Passive valve assembly for vehicle exhaust system
Patient-to-transducer interface device
Penetrometer acoustic soil sensor
Pentagonal speaker enclosure with a downward directed dynamic da
Perforate tube muffler
Perforated acoustic transport member
Perforated acoustical attenuators
Perforated end pipe of silencer unit
Perforated sound absorbing panel
Perforated soundproof structure and method of manufacturing...
Perforation acoustic muffler assembly and method of reducing...
Peripheral return flow muffler