Micromechanical microphone

Microphone

Midrange loudspeaker driver

Miniature electroacoustic transducer

Minimal inductance electrodynamic transducer

Modularly expandable electrostatic speaker system

Moving-coil loudspeaker unit

Multi-driver loudspeaker assembly

Multiple voice coil, multiple function loudspeaker

Multipoint driving loudspeaker having repulsion magnetic-type dr

Paper structures for speaker transducers

Performance enhancement of closed-ended magnetic circuits by sel

Permanent magnet system with associated coil arrangement

Planar magnetic transducer

Planar speakers

Reactance-mass actuator

Resonant tuned, ultrasonic electrostatic emitter

Self-cooled loudspeaker

Self-cooled magnetic structure for loudspeakers

Shallow loudspeaker with slotted magnet structure