Secure voice transmission

Securing magnets in high-efficiency planar magnetic transducers

Selectable handle for hearing devices

Selection of communication connections in hearing aids

Selective decoder for compatible FM stereophonic system utilizin

Self contained MP3 player and earphones

Self damping speaker matching device

Self damping speaker matching device and method

Self-adjusting earloop for an over-the-ear headset

Self-adjusting earloop for an over-the-ear headset

Self-adjusting earloop for an over-the-ear headset

Self-aligning self-sealing high-fidelity portable speaker...

Self-biased amplifier device for an electrecret microphone

Self-compensating equalizer

Self-contained active sound reproducer with switchable control u

Self-contained helmet communication system

Self-cooled electro-magnetic audio transducer

Self-cooled loudspeaker

Self-cooled magnetic structure for loudspeakers

Self-fitting hearing protection earplug with facile...