Assignee
DIGISONIX INC
US26 patents
Top patents by PatentIndex Score
US5706344AJan 6, 1998
Acoustic echo cancellation in an integrated audio and telecommunication system
DIGISONIX INC173 citations98
US6094601AJul 25, 2000
Adaptive control system with efficiently constrained adaptation
DIGISONIX INC67 citations95
US5715320AFeb 3, 1998
Active adaptive selective control system
DIGISONIX INC64 citations95
US5586190ADec 17, 1996
Active adaptive control system with weight update selective leakage
DIGISONIX INC102 citations95
US6496581B1Dec 17, 2002
Coupled acoustic echo cancellation system
DIGISONIX INC71 citations94
US5693918ADec 2, 1997
Active exhaust silencer
DIGISONIX INC72 citations94
US5701350ADec 23, 1997
Active acoustic control in remote regions
DIGISONIX INC32 citations92
US5633795AMay 27, 1997
Adaptive tonal control system with constrained output and adaptation
DIGISONIX INC43 citations92
US5602929AFeb 11, 1997
Fast adapting control system and method
DIGISONIX INC38 citations92
US5590205ADec 31, 1996
Adaptive control system with a corrected-phase filtered error update
DIGISONIX INC32 citations92
US5541373AJul 30, 1996
Active exhaust silencer
DIGISONIX INC42 citations92
US5513266AApr 30, 1996
Integral active and passive silencer
DIGISONIX INC47 citations92
US5418873AMay 23, 1995
Active acoustic attenuation system with indirect error sensing
DIGISONIX INC20 citations92
US5602928AFeb 11, 1997
Multi-channel communication system
DIGISONIX INC50 citations91
US5561598AOct 1, 1996
Adaptive control system with selectively constrained ouput and adaptation
DIGISONIX INC38 citations91
US5386477AJan 31, 1995
Active acoustic control system matching model reference
DIGISONIX INC51 citations91
US5710822AJan 20, 1998
Frequency selective active adaptive control system
DIGISONIX INC48 citations90
US5621803AApr 15, 1997
Active attenuation system with on-line modeling of feedback path
DIGISONIX INC34 citations89
US5680337AOct 21, 1997
Coherence optimized active adaptive control system
DIGISONIX INC35 citations88
US5446249AAug 29, 1995
Dry acoustic system preventing condensation
DIGISONIX INC43 citations85
US6295363B1Sep 25, 2001
Adaptive passive acoustic attenuation system
DIGISONIX INC20 citations79
US5963651AOct 5, 1999
Adaptive acoustic attenuation system having distributed processing and shared state nodal architecture
DIGISONIX INC20 citations75
US5586189ADec 17, 1996
Active adaptive control system with spectral leak
DIGISONIX INC16 citations73
US5627747AMay 6, 1997
System for developing and operating an active sound and vibration control system
DIGISONIX INC17 citations71
US5420932AMay 30, 1995
Active acoustic attenuation system that decouples wave modes propagating in a waveguide
DIGISONIX INC17 citations70
US5570425AOct 29, 1996
Transducer daisy chain
DIGISONIX INC14 citations68