| Patents for G10L 19 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis (31,960) |
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| 08/13/1998 | WO1998035341A2 Transmission system for transmitting speech signals |
| 08/13/1998 | DE19804584A1 Verfahren und Vorrichtung zum Codieren und Decodieren von Audiosignalen Method and apparatus for encoding and decoding of audio signals |
| 08/12/1998 | EP0858159A2 Band synthesis and band splitting filter bank encoder and decoder, encoding and decoding method |
| 08/12/1998 | EP0858069A1 Voice encoder, voice decoder, recording medium on which program for realizing voice encoding/decoding is recorded and mobile communication apparatus |
| 08/12/1998 | EP0858067A2 Multichannel acoustic signal coding and decoding methods and coding and decoding devices using the same |
| 08/12/1998 | EP0857375A1 Method of and apparatus for coding, manipulating and decoding audio signals |
| 08/11/1998 | US5794199 Method and system for improved discontinuous speech transmission |
| 08/11/1998 | US5794186 Method and apparatus for encoding speech excitation waveforms through analysis of derivative discontinues |
| 08/11/1998 | US5794185 Method and apparatus for speech coding using ensemble statistics |
| 08/11/1998 | US5794183 Method of preparing data, in particular encoded voice signal parameters |
| 08/11/1998 | US5794182 Linear predictive speech encoding systems with efficient combination pitch coefficients computation |
| 08/11/1998 | US5794180 Signal quantizer wherein average level replaces subframe steady-state levels |
| 08/11/1998 | US5793930 Analogue signal coder |
| 08/05/1998 | EP0856960A1 Reception data expander |
| 08/05/1998 | EP0856185A1 Repetitive sound compression system |
| 08/05/1998 | EP0500159B1 Transmission system, and receiver to be used in the transmission system |
| 08/05/1998 | CN1189911A Method to evaluate the hangover period in a speech decorder in discontinuous transmission, and a speech encoder and a transceiver |
| 08/04/1998 | US5790759 Perceptual noise masking measure based on synthesis filter frequency response |
| 08/04/1998 | US5790587 Multi-band, multi-mode spread-spectrum communication system |
| 08/04/1998 | US5790532 Voice over video communication system |
| 08/04/1998 | CA2090205C Speech coding system |
| 07/30/1998 | WO1998033320A1 Method of transferring media files over a communications network |
| 07/30/1998 | WO1998033284A2 Audio compression |
| 07/30/1998 | CA2279631A1 Method of transferring media files over a communications network |
| 07/30/1998 | CA2278576A1 Audio compression |
| 07/29/1998 | EP0855805A2 Method of encoding digital audio signals |
| 07/29/1998 | EP0855793A2 Method of controlling dynamic range of digital audio broadcasting receiver |
| 07/29/1998 | EP0855699A2 Multipulse-excited speech coder/decoder |
| 07/29/1998 | CN1189264A Reduced complexity signal transmission system |
| 07/29/1998 | CN1189263A Reduced complexity signal transmission system |
| 07/29/1998 | CN1189259A Method and arrangement for coding and decoding signals |
| 07/29/1998 | CN1189072A Method of reverting to tanden operation between transcoders of communication system |
| 07/29/1998 | CN1188957A Vector quantization method and speech encoding method and apparatus |
| 07/28/1998 | US5787399 Portable recording/reproducing device, IC memory card recording format, and recording/reproducing mehtod |
| 07/28/1998 | US5787391 Speech coding by code-edited linear prediction |
| 07/28/1998 | US5787390 Method for linear predictive analysis of an audiofrequency signal, and method for coding and decoding an audiofrequency signal including application thereof |
| 07/28/1998 | US5787389 Speech encoder with features extracted from current and previous frames |
| 07/28/1998 | US5787388 Frame-count-dependent smoothing filter for reducing abrupt decoder background noise variation during speech pauses in VOX |
| 07/28/1998 | US5787387 Harmonic adaptive speech coding method and system |
| 07/28/1998 | US5787076 Multi-mode TDMA spread spectrum communication system |
| 07/28/1998 | CA2102080C Time shifting for generalized analysis-by-synthesis coding |
| 07/23/1998 | WO1998032230A1 Data compression/expansion on a plurality of digital information signals |
| 07/22/1998 | EP0854622A2 Mobile communication apparatus having recording/reproducing function |
| 07/22/1998 | EP0854469A2 Speech encoding apparatus and method |
| 07/22/1998 | EP0853842A1 Encoding of a plurality of information signals |
| 07/22/1998 | EP0717892B1 Real-time audio packet layer encoder |
| 07/22/1998 | CN1188572A N-channel transmission, compatible with 2-channel transmission and 1-channel transmission |
| 07/22/1998 | CN1188571A 7-channel transmission, compatible with 5-channel transmission and 2-channel transmission |
| 07/22/1998 | CN1188557A Celp speech coder with reduced complexity synthesis filter |
| 07/22/1998 | CN1188556A Gain quantization method in analysis-by-synthesis linear predictive speech coding |
| 07/21/1998 | US5784691 RDS-TMC broadcast receiver |
| 07/21/1998 | US5784532 Application specific integrated circuit (ASIC) for performing rapid speech compression in a mobile telephone system |
| 07/21/1998 | US5784277 Real-time audio packet layer encoder |
| 07/21/1998 | CA2124645C Method of and device for quantizing spectral parameters in digital speech coders |
| 07/21/1998 | CA2124643C Method and device for speech signal pitch period estimation and classification in digital speech coders |
| 07/15/1998 | EP0737350A4 System and method for performing voice compression |
| 07/15/1998 | CN1187665A Speech analysis method and speech encoding method and apparatus thereof |
| 07/14/1998 | US5781888 Perceptual noise shaping in the time domain via LPC prediction in the frequency domain |
| 07/14/1998 | US5781883 Method for real-time reduction of voice telecommunications noise not measurable at its source |
| 07/14/1998 | US5781882 Very low bit rate voice messaging system using asymmetric voice compression processing |
| 07/14/1998 | US5781881 Variable-subframe-length speech-coding classes derived from wavelet-transform parameters |
| 07/14/1998 | US5781880 Pitch lag estimation using frequency-domain lowpass filtering of the linear predictive coding (LPC) residual |
| 07/14/1998 | US5781586 Method and apparatus for encoding the information, method and apparatus for decoding the information and information recording medium |
| 07/14/1998 | CA2128708C Method and system for the arrangement of vocoder data for the masking of transmission channel induced errors |
| 07/08/1998 | EP0852376A2 Improved multimodal code-excited linear prediction (CELP) coder and method |
| 07/08/1998 | EP0852375A1 Speech coder methods and systems |
| 07/08/1998 | EP0852373A2 Improved synthesizer and method |
| 07/08/1998 | EP0852086A1 Method and apparatus for transporting auxiliary data in audio signals |
| 07/08/1998 | CN1186996A Improved synthesizer and method |
| 07/07/1998 | US5778339 Signal encoding method, signal encoding apparatus, signal decoding method, signal decoding apparatus, and recording medium |
| 07/07/1998 | US5778338 Apparatus for masking frame errors |
| 07/07/1998 | US5778337 Dispersed impulse generator system and method for efficiently computing an excitation signal in a speech production model |
| 07/07/1998 | US5778335 Method and apparatus for efficient multiband celp wideband speech and music coding and decoding |
| 07/07/1998 | US5778334 Speech coders with speech-mode dependent pitch lag code allocation patterns minimizing pitch predictive distortion |
| 07/07/1998 | US5777992 Decoder for decoding and encoded digital signal and a receiver comprising the decoder |
| 07/07/1998 | US5777568 Analog/digital and digital/analog converting apparatus |
| 07/02/1998 | WO1998028936A1 Detection of speech channel back-looping |
| 07/02/1998 | WO1998028734A1 Method and apparatus for controlling the use of discontinuous transmission in a cellular telephone |
| 07/02/1998 | DE19722705A1 Method of determining volume of input speech signal for speech encoding |
| 07/02/1998 | CA2277840A1 Method and apparatus for controlling the use of discontinuous transmission in a cellular telephone |
| 07/01/1998 | EP0851423A1 Audio player and recorder employing semiconductor memory as a recording medium |
| 07/01/1998 | EP0851407A2 Method for restoring speech data in speech codec |
| 07/01/1998 | EP0851406A2 Spectrum feature parameter extracting system based on frequency weight estimation function |
| 07/01/1998 | EP0851404A2 System and method for enhanced intelligibility of voice messages |
| 07/01/1998 | EP0851403A2 Apparatus for generating text data on the basis of speech data input from terminal |
| 07/01/1998 | EP0850471A1 Very low bit rate voice messaging system using variable rate backward search interpolation processing |
| 07/01/1998 | EP0850470A1 Vector quantization method for low bit rate vocoders |
| 07/01/1998 | CN1186561A Method of determining pulse location in a speech frame |
| 07/01/1998 | CN1186560A Method of coding excitation pulse parameter sequence |
| 06/30/1998 | US5774863 Speech information recording/reproducing apparatus |
| 06/30/1998 | US5774856 User-Customized, low bit-rate speech vocoding method and communication unit for use therewith |
| 06/30/1998 | US5774849 Method and apparatus for generating frame voicing decisions of an incoming speech signal |
| 06/30/1998 | US5774847 Methods and apparatus for distinguishing stationary signals from non-stationary signals |
| 06/30/1998 | US5774846 Speech coding apparatus, linear prediction coefficient analyzing apparatus and noise reducing apparatus |
| 06/30/1998 | US5774842 Noise reduction method and apparatus utilizing filtering of a dithered signal |
| 06/30/1998 | US5774840 Speech coder using a non-uniform pulse type sparse excitation codebook |
| 06/30/1998 | US5774839 Delayed decision switched prediction multi-stage LSF vector quantization |
| 06/30/1998 | US5774838 Speech coding system utilizing vector quantization capable of minimizing quality degradation caused by transmission code error |
| 06/30/1998 | US5774837 Method for processing an audio signal |
| 06/30/1998 | US5774835 Method and apparatus of postfiltering using a first spectrum parameter of an encoded sound signal and a second spectrum parameter of a lesser degree than the first spectrum parameter |