Easily controlled exhaust pipe
Easily-combinable and movable speaker case
Eccentric exhaust muffler for use with auxiliary power units
Echo sounds melodeon
Economical exhaust muffler system for a marine propulsion...
Edge sealing means in a sound-absorbing cover for use in a sound
Ejector and method for controlling jet engine noise
Ejector muffler
Elastomeric acoustic insulator
Elbow silencer
Electrically controlled in-muffler exhaust valve for use...
Electroacoustic public address unit with acoustic horn or...
Electronic apparatus
Electronic muffler assembly with exhaust bypass
Electronically controlled dual chamber variable resonator
Electronically controlled variable loudness muffler
Element for sonic and vibratory absorption
Ellipticized acoustical lens providing balanced astigmatism
Ellipticized acoustical liquid filled lens providing balanced as
Ellipticized rubber acoustical lens providing balanced astigmati