Inventor · Los Gatos, CA, US

Martin E. Johnson

98Patents
12h-index
95Co-inventors
87Inventor score

Filing activity: Jul 12, 1994 → May 3, 2024

Most-cited inventions

PatentTitleAreaCited byStatus
US8879761B2 Orientation-based audio Electricity 313 Active
US9900723B1 Multi-channel loudspeaker matching using variable directivity Electricity 149 Active
US9723420B2 System and method for robust simultaneous driver measurement for a speaker system Electricity 123 Active
US5542777A Fastener for composite structures Emerging Cross-Sectional Technologies 50 Expired
US8811648B2 Moving magnet audio transducer Electricity 33 Active
US10021506B2 Adjusting the beam pattern of a speaker array based on the location of one or more listeners Electricity 30 Active
US11100349B2 Audio assisted enrollment Physics 24 Active
US9516409B1 Echo cancellation and control for microphone beam patterns Electricity 19 Active
US10061009B1 Robust confidence measure for beamformed acoustic beacon for device tracking and localization Physics 19 Active
US10015584B2 Loudspeaker with reduced audio coloration caused by reflections from a surface Electricity 16 Active
US9762999B1 Modal based architecture for controlling the directivity of loudspeaker arrays Electricity 15 Active
US10652650B2 Loudspeaker with reduced audio coloration caused by reflections from a surface Electricity 12 Active
US10524080B1 System to move a virtual sound away from a listener using a crosstalk canceler Electricity 10 Active
US9107003B2 Extended duct with damping for improved speaker performance Electricity 10 Active
US10178490B1 Intelligent audio rendering for video recording Electricity 9 Active
US10798511B1 Processing of audio signals for spatial audio Electricity 9 Active
US10609484B2 Audio system with configurable zones Electricity 7 Active
US10880649B2 System to move sound into and out of a listener's head using a virtual acoustic system Electricity 7 Active
US8942410B2 Magnetically biased electromagnet for audio applications Electricity 7 Active
US11290805B2 Loudspeaker with reduced audio coloration caused by reflections from a surface Electricity 6 Active
US9961472B2 Acoustic beacon for broadcasting the orientation of a device Electricity 6 Active
US11315277B1 Device to determine user-specific HRTF based on combined geometric data Electricity 6 Active
US11115773B1 Audio system and method of generating an HRTF map Electricity 5 Active
US9756446B2 Robust crosstalk cancellation using a speaker array Electricity 4 Active
US9859858B2 Correction of unknown audio content Electricity 4 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.