Damping means for ultrasonic transmitters
Defined-coverage loudspeaker horn
Deflector for converting a beam of parallel rays into a beam...
Deployable audible protection system
Deployable cylindrical sonar
Deratization system with control of the remote terminals by...
Device for entertainment during driving of a car
Device for the generation of ultrasonics and their...
Device used to submit an object to a shock wave
Diaphragm for a loudspeaker
Diaphragm for acoustic equipment
Diaphragm suspension construction
Digital audio horn
Digital feed-forward active noise control system
Digital sampling playback doorbell system
Digital virtual earth active cancellation system
Digitally controlled analog cancellation system
Digitally shaped noise generating system
Directional ear device with adaptive bandwidth and gain control
Directional geophone buoy system