|
| US4076960 | 27 Oct 1976 | 28 Feb 1978 | Texas Instruments Incorporated | CCD speech processor |
| US4184049 | 25 Ago 1978 | 15 Ene 1980 | Bell Telephone Laboratories, Incorporated | Transform speech signal coding with pitch controlled adaptive quantizing |
| US4310721 | 23 Ene 1980 | 12 Ene 1982 | The United States of America as represented by the Secretary of the Army | Half duplex integral vocoder modem system |
| US4495620 | 5 Ago 1982 | 22 Ene 1985 | AT&T Bell Laboratories | Transmitting data on the phase of speech |
| US4914749 | 29 Oct 1984 | 3 Abr 1990 | NEC Corporation | Method capable of extracting a value of a spectral envelope parameter with a reduced amount of operations and a device therefor |
| US4941178 | 9 May 1989 | 10 Jul 1990 | GTE Laboratories Incorporated | Speech recognition using preclassification and spectral normalization |
| US5179626 | 8 Abr 1988 | 12 Ene 1993 | AT&T Bell Laboratories | Harmonic speech coding arrangement where a set of parameters for a continuous magnitude spectrum is determined by a speech analyzer and the parameters are used by a synthesizer to determine a spectrum which is used to determine senusoids for synthesis |
| US5216748 | 4 Nov 1991 | 1 Jun 1993 | Bull, S.A. | Integrated dynamic programming circuit |
| US5412589 | 16 Jun 1992 | 2 May 1995 | University of Michigan | System for detecting reduced interference time-frequency distribution |
| US5715363 | 18 May 1995 | 3 Feb 1998 | Canon Kabushika Kaisha | Method and apparatus for processing speech |
| US5809453 | 25 Ene 1996 | 15 Sep 1998 | Dragon Systems UK Limited | Methods and apparatus for detecting harmonic structure in a waveform |
| US6026348 | 14 Oct 1997 | 15 Feb 2000 | Bently Nevada Corporation | Apparatus and method for compressing measurement data correlative to machine status |
| US6108621 | 7 Oct 1997 | 22 Ago 2000 | Sony Corporation | Speech analysis method and speech encoding method and apparatus |
| US6507804 | 14 Feb 2000 | 14 Ene 2003 | Bently Nevada Corporation | Apparatus and method for compressing measurement data corelative to machine status |
| US6725108 | 28 Ene 1999 | 20 Abr 2004 | International Business Machines Corporation | System and method for interpretation and visualization of acoustic spectra, particularly to discover the pitch and timbre of musical sounds |
| US7333930 | 14 Mar 2003 | 19 Feb 2008 | Agere Systems Inc. | Tonal analysis for perceptual audio coding using a compressed spectral representation |
| US7580534 | 3 Mar 2005 | 25 Ago 2009 | Siemens Audiologische Technik GmbH | Method and arrangement for transmitting signals to a hearing aid |
| US8065138 | 31 Ago 2007 | 22 Nov 2011 | Japan Advanced Institute of Science and Technology Glory Ltd. | Speech processing method and apparatus, storage medium, and speech system |