Beamformer using coefficient restrained adaptive filters for...
Bear aware
Bell
Bell assembly having actuatable clapper
Bell ringer
Bell ringing apparatus
Bell ringing apparatus
Bell ringing device
Bell ringing mechanism
Bell ringing mechanism
Bellringer
Binaural sound pickup
Binaural sound reproducing system with acoustic...
Biplane phased array transducer for ultrasonic medical imaging
Bird and animal call
Blast attenuator
Bracket for mounting shell-less drums
Buddy rattle
Cabin communication system
Cap for a pen or the like, with sound producer