Phase conversion surround circuitry
Phase selectable circuit for use in a stereo demodulator
Piezo-film speaker and speaker built-in helmet using the same
Pillow speaker apparatus and method
Pilot cancellation circuit
Pilot signal cancelling system
Pilot signal detecting circuit for AM stereo signals
Pilot signal detection circuit
Pilot tone cancelling circuit for AM stereo decoder
Planar speaker for multimedia laptop PCs
Playback apparatus and playback method
PLL circuit for generating output signal synchronized with input
Plural-channel sound processing
PM Decoder sample and hold circuit
Point source speaker system
Point source speaker system
Point source speaker system
Point source speaker system
Portable audio devices
Portable loud speaker system