Active muffler transducer arrangement
Active noise control system
Active silencer
Active sound attenation system for engine exhaust systems and th
Actively sound reduced muffler having a venturi effect configura
Actively sound reduced muffler having a venturi effect configura
Actuator for an air gun having a reciprocating shuttle valve
Adapter or appliance with a user interface window
Adaptor for mounting a sound tube in an earpiece
Adhesive insulation system
Adhesive insulation system
Adjustable brace
Adjustable earplug
Adjustable headset
Adjustable high frequency sound dispersion system
Adjustable isolation mounting system for center channel loudspea
Adjustable light and air-admitting window thermal and acoustic b
Adjustable motorcycle muffler
Adjustable muffler for model aircraft type engines
Adjustable sound attenuating device