|
| US4074069 | 1 juin 1976 | 14 févr. 1978 | Nippon Telegraph & Telephone Public Corporation | Method and apparatus for judging voiced and unvoiced conditions of speech signal |
| US4081605 | 18 août 1976 | 28 mars 1978 | Nippon Telegraph and Telephone Public Corporation | Speech signal fundamental period extractor |
| US4140876 | 29 mars 1978 | 20 févr. 1979 | Scitronix Corp. | Compressed speech system and predictor |
| US4209844 | 12 mai 1978 | 24 juin 1980 | Texas Instruments Incorporated | Lattice filter for waveform or speech synthesis circuits using digital logic |
| US4344148 | 25 févr. 1980 | 10 août 1982 | Texas Instruments Incorporated | System using digital filter for waveform or speech synthesis |
| US4349699 | 30 sept. 1980 | 14 sept. 1982 | Nippon Telegraph & Telephone Public Corporation Hitachi, Ltd. | Speech synthesizer |
| US4378469 | 26 mai 1981 | 29 mars 1983 | Motorola Inc. | Human voice analyzing apparatus |
| US4389540 | 19 mars 1981 | 21 juin 1983 | Tokyo Shibaura Denki Kabushiki Kaisha | Adaptive linear prediction filters |
| US4398262 | 22 déc. 1981 | 9 août 1983 | Motorola, Inc. | Time multiplexed n-ordered digital filter |
| US4401855 | 28 nov. 1980 | 30 août 1983 | The Regents of the University of California | Apparatus for the linear predictive coding of human speech |
| US4443859 | 6 juil. 1981 | 17 avr. 1984 | Texas Instruments Incorporated | Speech analysis circuits using an inverse lattice network |
| US4464784 | 30 avr. 1981 | 7 août 1984 | Eventide Clockworks, Inc. | Pitch changer with glitch minimizer |
| US4473904 | 29 mars 1982 | 25 sept. 1984 | Hitachi, Ltd. | Speech information transmission method and system |
| US4479124 | 10 juil. 1981 | 23 oct. 1984 | Texas Instruments Incorporated | Synthesized voice radio paging system |
| US4489433 | 8 mars 1984 | 18 déc. 1984 | Hitachi, Ltd. | Speech information transmission method and system |
| US4509188 | 16 juin 1983 | 2 avr. 1985 | Tokyo Shibaura Denki Kabushiki Kaisha | Signal synthesizer apparatus |
| US4544919 | 28 déc. 1984 | 1 oct. 1985 | Motorola, Inc. | Method and means of determining coefficients for linear predictive coding |
| US4581747 | 5 mars 1984 | 8 avr. 1986 | AT&T Bell Laboratories | Arrangement for equalizing the variable attenuation of a signal on a communication line |
| US4594687 | 26 juil. 1983 | 10 juin 1986 | Nippon Telegraph & Telephone Corporation | Address arithmetic circuit of a memory unit utilized in a processing system of digitalized analogue signals |
| US5101432 | 16 janv. 1990 | 31 mars 1992 | Cardinal Encryption Systems Ltd. Joseph Alfred Webb | Signal encryption |
| US5237642 | 22 janv. 1992 | 17 août 1993 | Adler Research Associates | Optimal parametric signal processor |
| US5251284 | 22 janv. 1992 | 5 oct. 1993 | Adler Research Associates | Optimal parametric signal processor with lattice basic cell |
| US5265217 | 6 mai 1992 | 23 nov. 1993 | Adler Research Associates | Optimal parametric signal processor for least square finite impulse response filtering |
| US5315687 | 24 sept. 1992 | 24 mai 1994 | Adler Research Associates | Side fed superlattice for the production of linear predictor and filter coefficients |
| US5587910 | 6 févr. 1995 | 24 déc. 1996 | Rockwell International Corporation | Vehicle navigation system with non-overflow digital filter |
| US7522556 | 3 mars 2005 | 21 avr. 2009 | Spotwave Wireless Inc. | Signal recognition in an on-frequency repeater |
| US8185929 | 27 mai 2005 | 22 mai 2012 | | Program viewing apparatus and method |