Automatic ipod volume adjustment
Automatic magnetic detection in hearing aids
Automatic mixer apparatus
Automatic seat belt device
Automatic sound controlling apparatus
Automatic sound level controller
Automatic switch for hearing aid
Automatically configured audio system
Automotive sound system
Automotive vehicle sound distribution system
Auxiliary attenuator arrangement for use in voice-switched...
Auxiliary bass radiator units
Backplate construction for electret transducer
Baffled microphone assembly
Balanced armature transducers with transverse gap
Balanced tensilized polyethylene terephthalate film
Bandpass woofer and method
Bandwidth extension of bandlimited audio signals
Battery lock
Battery monitor and power demand adjuster