Recherche Images Maps Play YouTube Actualités Gmail Drive Plus »
Recherche avancée dans les brevets | Historique Web | Connexion

Brevets

Référencé par

Brevet citant Date de dépôt Date de délivrance Cessionnaire d'origine Titre
US393661028 mai 19743 févr. 1976Cambridge Research and Development Group
Sanford D. Greenberg
DT Liquidating Partnership
Murray M. Schiffman
Dual delay line storage sound signal processor
US393680526 déc. 19733 févr. 1976International Business Machines CorporationDictation system for storing and retrieving audio information
US39506179 sept. 197413 avr. 1976The United States of America as represented by the Secretary of the NavyHelium speech unscrambler with pitch synchronization
US401654022 janv. 19735 avr. 1977Apparatus and method for providing interactive audio communication
US405133129 mars 197627 sept. 1977Brigham Young UniversitySpeech coding hearing aid system utilizing formant frequency transformation
US406084822 janv. 197329 nov. 1977Electronic calculator system having audio messages for operator interaction
US412371124 janv. 197731 oct. 1978Canadian Patents and Development LimitedSynchronized compressor and expander voice processing system for radio telephone
US41777072 mai 197711 déc. 1979Electronic music synthesizer
US446478430 avr. 19817 août 1984Eventide Clockworks, Inc.Pitch changer with glitch minimizer
US46240126 mai 198218 nov. 1986Texas Instruments IncorporatedMethod and apparatus for converting voice characteristics of synthesized speech
US481101930 mai 19867 mars 1989Shure Brothers Incorporated, Inc.Delta modulation encoding/decoding circuitry
US482338027 mars 198718 avr. 1989Chaim KohenVoice changer
US48253641 oct. 197325 avr. 1989Monolithic data processor with memory refresh
US48903263 mars 198826 déc. 1989Rubiyat Software, Inc.Method for compressing data
US489626024 avr. 198923 janv. 1990Data processor having integrated circuit memory refresh
US559490822 janv. 199014 janv. 1997Computer system having a serial keyboard, a serial display, and a dynamic memory with memory refresh
US56153809 avr. 199125 mars 1997Integrated circuit computer system having a keyboard input and a sound output
US57178189 sept. 199410 févr. 1998Hitachi, Ltd.Audio signal storing apparatus having a function for converting speech speed
US57942015 juin 199511 août 1998Hitachi, Ltd.Digital acoustic signal processing apparatus
US59407985 févr. 199817 août 1999Scientific Learning CorporationFeedback modification for reducing stuttering
US609804629 juin 19981 août 2000Pixel InstrumentsFrequency converter system
US622660511 août 19981 mai 2001Hitachi, Ltd.Digital voice processing apparatus providing frequency characteristic processing and/or time scale expansion
US642163630 mai 200016 juil. 2002Pixel InstrumentsFrequency converter system
US657773916 sept. 199810 juin 2003University of Iowa Research FoundationApparatus and methods for proportional audio compression and frequency shifting
US70724826 sept. 20024 juil. 2006Sonion Nederland B.V.Microphone with improved sound inlet port
US776475830 janv. 200327 juil. 2010LSI CorporationApparatus and/or method for variable data rate conversion
US806036130 oct. 200715 nov. 2011Hon Hai Precision Industry Co., Ltd.Communication device with a function of audio modulation and method for audio modulation
US818592927 mai 200522 mai 2012Program viewing apparatus and method