| 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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| 05/07/1997 | EP0772185A2 Speech decoding method and apparatus |
| 05/07/1997 | EP0719483B1 Process for determining the type of coding to be selected for coding at least two signals |
| 05/07/1997 | CN1149366A Apparatus and methods for including codes in audio signals and decoding |
| 05/06/1997 | USH1646 Speech recognition adapter for telephone system |
| 05/06/1997 | US5627939 Speech recognition system and method employing data compression |
| 05/06/1997 | US5627938 Rate loop processor for perceptual encoder/decoder |
| 05/06/1997 | CA2111409C System for search of a codebook in a speech encoder |
| 05/06/1997 | CA2085384C Speech encoding and decoding capable of improving a speech quality |
| 05/02/1997 | EP0771083A2 Audio coding device and audio decoding device |
| 05/02/1997 | EP0770990A2 Speech encoding method and apparatus and speech decoding method and apparatus |
| 05/02/1997 | EP0770989A2 Speech encoding method and apparatus |
| 05/02/1997 | EP0770988A2 Speech decoding method and portable terminal apparatus |
| 05/02/1997 | EP0770987A2 Method and apparatus for reproducing speech signals, method and apparatus for decoding the speech, method and apparatus for synthesizing the speech and portable radio terminal apparatus |
| 05/02/1997 | EP0770985A2 Signal encoding method and apparatus |
| 05/02/1997 | EP0516701B1 Video telephone system |
| 05/01/1997 | WO1997015983A1 Method of and apparatus for coding, manipulating and decoding audio signals |
| 05/01/1997 | WO1997015916A1 Method, device, and system for an efficient noise injection process for low bitrate audio compression |
| 04/29/1997 | US5625746 Method and apparatus for encoding, decoding and compression of audio-type data |
| 04/29/1997 | US5625744 Speech parameter encoding device which includes a dividing circuit for dividing a frame signal of an input speech signal into subframe signals and for outputting a low rate output code signal |
| 04/29/1997 | US5625743 Determining a masking level for a subband in a subband audio encoder |
| 04/29/1997 | US5625687 Arrangement for enhancing the processing of speech signals in digital speech interpolation equipment |
| 04/29/1997 | US5625583 Analog memory system having an integrated circuit frequency domain processor |
| 04/24/1997 | WO1997015046A1 Repetitive sound compression system |
| 04/23/1997 | EP0769231A1 Voice over data modem with selectable voice compression |
| 04/23/1997 | EP0476614B1 Speech coding and decoding system |
| 04/23/1997 | CN1148292A Digital data encoding apparatus and method thereof |
| 04/23/1997 | CN1148232A Filter for speech modification or enhancement, and various apparatus, system and method using same |
| 04/22/1997 | US5623623 Digital storage system adopting semiconductor memory device |
| 04/22/1997 | US5623577 Computationally efficient adaptive bit allocation for encoding method and apparatus with allowance for decoder spectral distortions |
| 04/22/1997 | US5623575 Excitation synchronous time encoding vocoder and method |
| 04/22/1997 | US5623557 Method and apparatus for data encoding and data recording medium |
| 04/22/1997 | CA2103785C Speech coder and method having spectral interpolation and fast codebook search |
| 04/22/1997 | CA2005115C Low-delay code-excited linear predictive coder for speech or audio |
| 04/17/1997 | WO1997014229A1 Process and device for the scalable coding of audio signals |
| 04/17/1997 | WO1997014139A1 Signal prediction method and device for a speech coder |
| 04/16/1997 | EP0768770A1 Method and arrangement for the creation of comfort noise in a digital transmission system |
| 04/15/1997 | US5621855 Subband coding of a digital signal in a stereo intensity mode |
| 04/15/1997 | US5621853 Burst excited linear prediction |
| 04/15/1997 | US5621852 In a speech communication system |
| 04/15/1997 | US5621772 Hysteretic synchronization system for MPEG audio frame decoder |
| 04/10/1997 | WO1997013353A1 Communication system and method |
| 04/10/1997 | WO1997013242A1 Trifurcated channel encoding for compressed speech |
| 04/09/1997 | CN1147132A Speech reproducing device capable of reproducing long-time speech with reduced memory |
| 04/08/1997 | US5619717 Vector quantization using thresholds |
| 04/08/1997 | US5619508 Dual port interface for a computer-based multifunction personal communication system |
| 04/08/1997 | US5619445 Analog memory system having a frequency domain transform processor |
| 04/08/1997 | US5619197 Signal encoding and decoding system allowing adding of signals in a form of frequency sample sequence upon decoding |
| 04/02/1997 | EP0766468A2 Method and system for inserting a spread spectrum watermark into multimedia data |
| 04/02/1997 | EP0766247A2 Signal restoration using left-sided and right-sided autoregressive parameters |
| 04/02/1997 | EP0766232A2 Speech coding apparatus |
| 04/02/1997 | EP0766231A2 Spike code-excited linear prediction |
| 04/02/1997 | EP0766230A2 Method and apparatus for coding speech |
| 04/02/1997 | EP0624291B1 Error protection in a subband coder |
| 04/01/1997 | US5617507 Speech segment coding and pitch control methods for speech synthesis systems |
| 04/01/1997 | US5617423 Method for negotiating communications parameters |
| 03/27/1997 | DE19638997A1 Digital audio coding method with bit preparation for each frequency band |
| 03/26/1997 | EP0764941A2 Speech signal quantization using human auditory models in predictive coding systems |
| 03/26/1997 | EP0764940A2 am improved RCELP coder |
| 03/26/1997 | EP0764939A2 Synthesis of speech signals in the absence of coded parameters |
| 03/26/1997 | EP0764938A2 Perceptual noise masking based on synthesis filter frequency response |
| 03/25/1997 | US5615380 Integrated circuit computer system having a keyboard input and a sound output |
| 03/25/1997 | US5615299 Speech recognition using dynamic features |
| 03/25/1997 | US5615298 Excitation signal synthesis during frame erasure or packet loss |
| 03/25/1997 | US5615142 Analog memory system storing and communicating frequency domain information |
| 03/20/1997 | WO1997010585A1 Very low bit rate voice messaging system using variable rate backward search interpolation processing |
| 03/20/1997 | WO1997010584A1 Very low bit rate voice messaging system using asymmetric voice compression processing |
| 03/19/1997 | EP0763905A2 Subband decoding allowing for high-speed reproducing |
| 03/19/1997 | EP0763818A2 Formant emphasis method and formant emphasis filter device |
| 03/19/1997 | EP0763300A1 Pcs pocket phone/microcell communication over-air protocol |
| 03/19/1997 | EP0763283A1 Data transmission system, data recording and reproducing apparatus and recording medium each having data structure of error correcting code |
| 03/19/1997 | CN1145702A Device and method for encoding data and device and method for decoding data |
| 03/19/1997 | CN1145512A Method and apparatus for reproducing speech signals and method for transmitting same |
| 03/18/1997 | US5613035 Apparatus for adaptively encoding input digital audio signals from a plurality of channels |
| 03/18/1997 | US5612955 Mobile radio with transmit command control and mobile radio system |
| 03/18/1997 | CA2096991C Celp-based speech compressor |
| 03/13/1997 | WO1997009797A1 Method and apparatus for transporting auxiliary data in audio signals |
| 03/13/1997 | WO1997009791A1 Method and apparatus for minimal redundancy error detection and correction of voice spectrum parameters |
| 03/13/1997 | WO1997009711A1 Vector quantization method for low bit rate vocoders |
| 03/13/1997 | DE19537338C1 Audio signal coding method |
| 03/13/1997 | CA2231239A1 Method and apparatus for transporting auxiliary data in audio signals |
| 03/12/1997 | EP0762685A2 Recording and reproducing apparatus for audio signal using semiconductor memory |
| 03/12/1997 | EP0762386A2 Method and apparatus for CELP coding an audio signal while distinguishing speech periods and non-speech periods |
| 03/12/1997 | CN1145013A Method of transporting speech information in wireless cellular system |
| 03/11/1997 | US5610774 Audio sound recording/reproducing apparatus using semiconductor memory |
| 03/06/1997 | WO1996042071A3 Mpeg audio decoder |
| 03/05/1997 | EP0709006B1 Computationally efficient adaptive bit allocation for encoding method and apparatus with allowance for decoder spectral distortions |
| 03/05/1997 | CN1144583A Compact source coding tables for encoder/decoder system |
| 03/04/1997 | US5608888 Method and apparatus for mapping data of a 2-dimensional space from a linearly addressed memory system |
| 03/04/1997 | US5608805 Dynamic loader |
| 03/04/1997 | US5608397 Method and apparatus for generating DC-free sequences |
| 03/04/1997 | CA2084338C Method for speech coding and voice-coder |
| 02/27/1997 | WO1997007498A1 Speech processor |
| 02/26/1997 | EP0759663A1 Device and method for encoding data and device and method for decoding data |
| 02/26/1997 | EP0759201A1 Audio analysis/synthesis system |
| 02/26/1997 | CN1143865A RDS-TMC Broadcast receiver |
| 02/25/1997 | US5606642 Audio decompression system employing multi-rate signal analysis |
| 02/25/1997 | US5606618 Subband coded digital transmission system using some composite signals |
| 02/25/1997 | CA2101700C Low-delay audio signal coder, using analysis-by-synthesis techniques |
| 02/25/1997 | CA2068526C Speech coding system |
| 02/19/1997 | EP0758825A1 Method and apparatus for generating dc-free sequences with conveying partial information by the sequence of codeword digital sums of successive codewords |