Contoured foam headliner and method of making same

Control system and method for resonant apparatus such as...

Control system for periodic disturbances

Control system using harmonic filters

Conversion from note-based audio format to pcm-based audio...

Convex folded shell projector

Cordless guitar transmitter

Correlated active attenuation system with error and...

Curved array of sequenced ultrasound transducers

Cycle-type vehicle attachment

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