Inventor · Alameda, CA, US

Alan J. Seefeldt

180Patents
17h-index
84Co-inventors
89Inventor score

Filing activity: Aug 12, 1999 → May 23, 2024

Most-cited inventions

PatentTitleAreaCited byStatus
US8090120B2 Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal Electricity 112 Active
US8144881B2 Audio gain control using specific-loudness-based auditory event detection Electricity 89 Active
US9913056B2 System and method to enhance speakers connected to devices with microphones Electricity 78 Active
US9307340B2 Audio system equalization for portable media playback devices Electricity 65 Active
US8199933B2 Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal Electricity 63 Active
US8488809B2 Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal Electricity 51 Active
US8428270B2 Audio gain control using specific-loudness-based auditory event detection Electricity 35 Active
US8437482B2 Method, apparatus and computer program for calculating and adjusting the perceived loudness of an audio signal Electricity 29 Expired
US7945449B2 Temporal envelope shaping for spatial audio coding using frequency domain wiener filtering Physics 27 Active
US6369822B1 Audio-driven visual representations Physics 26 Expired
US8019095B2 Loudness modification of multichannel audio signals Electricity 21 Active
US6856329B1 Automated acquisition of video textures acquired from a digital camera for mapping to audio-driven deformable objects Emerging Cross-Sectional Technologies 20 Expired
US9826328B2 System for rendering and playback of object based audio in various listening environments Electricity 19 Active
US8015018B2 Multichannel decorrelation in spatial audio coding Physics 17 Active
US9842605B2 Apparatuses and methods for audio classifying and processing Physics 17 Active
USD880453S1 Speaker General 17 Active
US8194889B2 Hybrid digital/analog loudness-compensating volume control Electricity 17 Active
US9608584B2 Calculating and adjusting the perceived loudness and/or the perceived spectral balance of an audio signal Electricity 16 Active
US9933989B2 Binaural rendering for headphones using metadata processing Electricity 16 Active
US8213624B2 Loudness measurement with spectral modifications Physics 15 Active
US9136810B2 Audio gain control using specific-loudness-based auditory event detection Electricity 15 Active
US9450551B2 Audio control using auditory event detection Electricity 14 Active
US8914137B2 Upgradeable engine framework for audio and video Electricity 13 Active
US8255211B2 Temporal envelope shaping for spatial audio coding using frequency domain wiener filtering Physics 13 Active
US6448971B1 Audio driven texture and color deformations of computer generated graphics Physics 12 Expired

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