Self contained MP3 player and earphones

Signal processing systems

Silencer

Silencer

Silencer

Silencing apparatus

Silencing apparatus operable to reduce vehicle noise at a teleph

Single and multiple channel block adaptive methods and apparatus

Snoring suppression system

Sound attenuating system

Sound attenuation system for personal seat

Sound synthesizer in a vehicle

Speaker distortion compensator

Supra aural active noise reduction headphones

System for rapid convergence of an adaptive filter in the genera

System for reducing noise level in vehicular cabin

System for reducing noise sounding in passenger compartment of v

System for suppressing sound from a flame