Pattern matching system
Perceptual coding of audio signals
Perforated cap for a hearing aid
Peritympanic hearing instrument
Permanent magnet transducing
Phase coherent low frequency speaker
Phoneme recognition utilizing relative positions of reference ph
Pickup device for picking up vibration transmitted through bones
Planar diaphragm loudspeaker with counteractive weights
Planar electromagnetic transducer
Planar loudspeaker system
Planar loudspeaker system
Planar-type loudspeaker with dual density diaphragm
Planar-type loudspeaker with dual density diaphragm
Plugs, receptacles and hearing aids
Pocket hearing aid
Pocket hearing aid
Polyphonic coding
Poor-scatter pot magnet system for magnetic-dynamic loudspeakers
Portable communication apparatus