Magnetless speaker

Mass excited acoustic device

Means for affixing an ornamental sculpture to a sound emitting d

Mechanical acoustic crossover network and transducer therefor

Mechanical-vibration-cancelling piezo ceramic microphone

Mechanically tunable diaphragm using nickel titanium memory...

Mechanism of vibration type microphone

Membrane support system

Membrane support system

MEMS microphone package with RF insensitive MEMS microphone...

Metal base design for a speaker

Method and apparatus for a magnetically induced speaker diaphrag

Method and apparatus for controlling material vibration...

Method and apparatus for controlling the propagation of...

Method and apparatus for mounting a speaker within a radio

Method and apparatus for presentation of on-line directional sou

Method and apparatus for selective acoustic signal filtering

Method and apparatus for tooth bone conduction microphone

Method and apparatus for tooth bone conduction microphone

Method and apparatus to increase acoustic separation