Labyrinth for microphone

Laminated loudspeaker diaphragm with honeycomb core and...

Laminated semiconductor sensor with vibrating element and...

Language information system

Large-excursion electroacoustic transducer

Laser-optoelectronic microphone

Lay-in ceiling speaker

Lead-frame for an electret microphone

Learning by provocation

Lenseless focussed transducer

Level determining circuit generating output signal at first...

Linear actuator

Linear loudspeaker

Linear piezoelectric actuator with liner controlling...

Linkage arrangement in a pivoting armature transducer

Listening device for clear perception of sound signals in a...

Load and dispersion cell for sound

Long-time balancing of omni microphones

Longitudinally divided loudspeaker port with increased...

Look direction microphone system with visual aiming aid