Rattle
Receiver suspension and acoustic porting system
Reduced-noise device and method for reducing noise
Reflective audio assembly and picture
Reliability improvement for piezoelectric imaging array device
Remote sonic location system
Repetitive phenomena cancellation arrangement with multiple...
Resonant macrosonic synthesis
Respirator speech transmitter
Response waveform synthesis method and apparatus
Retractable transducer assembly for sonar dome
Reverberation estimation and suppression system
Reverberation sound generating apparatus
Reverbere a ressort pour instruments musicaux
Roller bell
Room sound reproducing