Inventor
EATWELL GRAHAM P
GB28 patents
⚠️ This page may combine multiple inventors who share the name “EATWELL GRAHAM P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NOISE CANCELLATION TECH
16 patentsUS5768473AJun 16, 1998
Adaptive speech filter
NOISE CANCELLATION TECH100 citations98
US5901231AMay 4, 1999
Piezo speaker for improved passenger cabin audio systems
NOISE CANCELLATION TECH90 citations97
US5828768AOct 27, 1998
Multimedia personal computer with active noise reduction and piezo speakers
NOISE CANCELLATION TECH376 citations96
US5481615AJan 2, 1996
Audio reproduction system
NOISE CANCELLATION TECH196 citations96
US6215884B1Apr 10, 2001
Piezo speaker for improved passenger cabin audio system
NOISE CANCELLATION TECH61 citations95
US6181797B1Jan 30, 2001
Piezo speaker for improved passenger cabin audio systems
NOISE CANCELLATION TECH50 citations92
US5812682ASep 22, 1998
Active vibration control system with multiple inputs
NOISE CANCELLATION TECH20 citations92
US5652770AJul 29, 1997
Sampled-data filter with low delay
NOISE CANCELLATION TECH28 citations92
US5553153ASep 3, 1996
Method and system for on-line system identification
NOISE CANCELLATION TECH52 citations92
US5475761ADec 12, 1995
Adaptive feedforward and feedback control system
NOISE CANCELLATION TECH54 citations92
US5469087ANov 21, 1995
Control system using harmonic filters
NOISE CANCELLATION TECH30 citations92
US5431008AJul 11, 1995
Active control of machine performance
NOISE CANCELLATION TECH22 citations92
US5418857AMay 23, 1995
Active control system for noise shaping
NOISE CANCELLATION TECH32 citations92
US5361303ANov 1, 1994
Frequency domain adaptive control system
NOISE CANCELLATION TECH40 citations92
US5745581AApr 28, 1998
Tracking filter for periodic signals
NOISE CANCELLATION TECH19 citations86
US5638022AJun 10, 1997
Control system for periodic disturbances
NOISE CANCELLATION TECH19 citations84
ROLLS ROYCE PLC
4 patentsUS5005353AApr 9, 1991
Active control of unsteady motion phenomena in turbomachinery
ROLLS ROYCE PLC160 citations97
US5141391AAug 25, 1992
Active control of unsteady motion phenomena in turbomachinery
ROLLS ROYCE PLC84 citations95
US5082421AJan 21, 1992
Active control of unsteady motion phenomena in turbomachinery
ROLLS ROYCE PLC51 citations95
US4967550ANov 6, 1990
Active control of unsteady motion phenomena in turbomachinery
ROLLS ROYCE PLC94 citations95