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

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)
12/1997
12/17/1997	EP0813183A2 Speech reproducing system
12/17/1997	EP0812453A2 Processing speech coding parameters in a telecommunication system
12/17/1997	EP0681730A4 Transmitted noise reduction in communications systems.
12/17/1997	EP0681728A4 A system and method for compression and decompression of audio signals.
12/17/1997	CN1168043A Telephone apparatus with recording function
12/16/1997	US5699485 Pitch delay modification during frame erasures
12/16/1997	US5699484 Method and apparatus for applying linear prediction to critical band subbands of split-band perceptual coding systems
12/16/1997	US5699483 Code excited linear prediction coder with a short-length codebook for modeling speech having local peak
12/16/1997	US5699482 Fast sparse-algebraic-codebook search for efficient speech coding
12/16/1997	US5699481 Timing recovery scheme for packet speech in multiplexing environment of voice with data applications
12/16/1997	US5699479 Tonality for perceptual audio compression based on loudness uncertainty
12/16/1997	US5699478 In a speech coding system
12/16/1997	US5699477 Mixed excitation linear prediction with fractional pitch
12/16/1997	US5699382 Method for noise weighting filtering
12/16/1997	CA2108208C Arrangement for demodulating speech signals discontinuously transmitted from a mobile unit
12/11/1997	DE19628293C1 Codieren und Decodieren von Audiosignalen unter Verwendung von Intensity-Stereo und Prädiktion Encoding and decoding of audio signals by using intensity stereo prediction and
12/10/1997	EP0811295A2 A method and device for encoding, transferring and decoding a non-pcm bitstream between a digital versatile disc device and a multi-channel reproduction apparatus
12/10/1997	EP0481895B1 Method and apparatus for low bit rate transmission of a speech signal using CELP coding
12/10/1997	CN1167309A Rate changeable sonic code device
12/10/1997	CN1167308A Method for derivation of characteristic value from phonetic signal
12/09/1997	US5696879 Method and apparatus for improved voice transmission
12/09/1997	US5696876 High-speed bit assignment method for an audio signal
12/09/1997	US5696875 Method and system for compressing a speech signal using nonlinear prediction
12/09/1997	US5696874 Multipulse processing with freedom given to multipulse positions of a speech signal
12/04/1997	WO1997045839A1 Data storage device
12/04/1997	WO1997045830A2 A method for coding human speech and an apparatus for reproducing human speech so coded
12/03/1997	EP0810762A2 Telephone apparatus with recording function
12/03/1997	EP0810585A2 Speech encoding and decoding apparatus
12/03/1997	EP0810584A2 Signal coder
12/03/1997	EP0809842A1 Adaptive speech filter
12/03/1997	EP0501421B1 Speech coding system
12/03/1997	CN1166669A Speech synthesis method and apparatus
12/02/1997	US5694522 Sub-band audio signal synthesizing apparatus
12/02/1997	US5694521 Variable speed playback system
12/02/1997	US5694519 Tunable post-filter for tandem coders
12/02/1997	US5694517 Signal discrimination circuit for determining the type of signal transmitted via a telephone network
12/02/1997	US5694429 Mobile radio communication system
12/02/1997	US5694426 Signal quantizer with reduced output fluctuation
12/02/1997	US5694414 Multi-band, multi-mode spread-spectrum communication system
12/02/1997	US5694332 MPEG audio decoding system with subframe input buffering
11/1997
11/27/1997	WO1997044779A1 Device for determining the quality of an output signal to be generated by a signal processing circuit, and also method
11/26/1997	EP0809236A1 Device for determining the quality of an output signal to be generated by a signal processing circuit, and also method
11/26/1997	EP0808496A1 Algebraic codebook with signal-selected pulse amplitudes for fast coding of speech
11/26/1997	CN1166019A Vector quantizer method
11/25/1997	US5692102 Method device and system for an efficient noise injection process for low bitrate audio compression
11/25/1997	US5692101 Speech coding method and apparatus using mean squared error modifier for selected speech coder parameters using VSELP techniques
11/25/1997	US5692100 Vector quantizer
11/25/1997	US5692098 Real-time Mozer phase recoding using a neural-network for speech compression
11/25/1997	US5692017 Receiving circuit
11/20/1997	WO1997043765A1 Audio storing and reproducing apparatus
11/20/1997	WO1997043761A2 Cryptographic methods, apparatus and systems for storage media electronic rights management in closed and connected appliances
11/20/1997	WO1997043736A1 Computer system linked by using information in data objects
11/20/1997	WO1997036249A3 Reduced complexity signal transmission system
11/19/1997	EP0807307A1 A pitch post-filter
11/19/1997	CN1165574A Very low bit rate voice messaging system using asymmetric voice compression processing
11/18/1997	US5689615 Usage of voice activity detection for efficient coding of speech
11/18/1997	US5689440 Voice compression method and apparatus in a communication system
11/18/1997	CA2106440C Method and apparatus for reducing correlated errors in subband coding systems with quantizers
11/13/1997	WO1997042742A2 Transmission of a digital information signal having a specific first sampling frequency
11/12/1997	EP0806848A2 Voice encoding/decoding apparatus
11/12/1997	EP0806032A1 Method and apparatus for detection and bypass of tandem vocoding
11/12/1997	CN1164728A Compressed audio signal processing
11/11/1997	US5687284 Excitation signal encoding method and device capable of encoding with high quality
11/11/1997	US5687283 Pause compressing speech coding/decoding apparatus
11/11/1997	US5687282 Method and apparatus for determining a masked threshold
11/11/1997	US5687281 Bark amplitude component coder for a sampled analog signal and decoder for the coded signal
11/11/1997	US5687229 Method for controlling echo canceling in an echo canceller
11/11/1997	US5687191 Post-compression hidden data transport
11/11/1997	US5687157 Method of recording and reproducing digital audio signal and apparatus thereof
11/06/1997	DE19715126A1 Sprachsignal-Codiervorrichtung A speech signal encoder device
11/05/1997	EP0805435A2 Signal quantiser for speech coding
11/05/1997	EP0804787A1 Method and device for resynthesizing a speech signal
11/05/1997	CN1164086A Digital signal recording apparatus and digital signal processing apparatus
11/04/1997	US5684926 MBE synthesizer for very low bit rate voice messaging systems
11/04/1997	US5684923 Methods and apparatus for compressing and quantizing signals
11/04/1997	US5684922 Encoding and decoding apparatus causing no deterioration of sound quality even when sine-wave signal is encoded
11/04/1997	US5684920 Acoustic signal transform coding method and decoding method having a high efficiency envelope flattening method therein
11/04/1997	US5684829 Digital signal processing coding and decoding system
11/04/1997	US5684804 Device for transmitting, receiving and decoding compressed audiovisual streams
10/1997
10/29/1997	EP0803861A2 Method for extracting characteristic features from a speech signal
10/29/1997	EP0803117A1 Adaptive speech coder having code excited linear prediction
10/28/1997	US5682463 Perceptual audio compression based on loudness uncertainty
10/28/1997	US5682462 Very low bit rate voice messaging system using variable rate backward search interpolation processing
10/28/1997	US5682407 Voice coder for coding voice signal with code-excited linear prediction coding
10/23/1997	WO1997029578A3 Dictation system
10/22/1997	EP0802524A2 Speech coder
10/22/1997	EP0801857A1 Method for substituting bad speech frames in a digital communication system
10/22/1997	EP0801790A1 Speech coding method using synthesis analysis
10/22/1997	EP0801789A1 Speech coding method using synthesis analysis
10/22/1997	EP0801788A1 Speech coding method using synthesis analysis
10/21/1997	US5680512 Personalized low bit rate audio encoder and decoder using special libraries
10/21/1997	US5680508 Enhancement of speech coding in background noise for low-rate speech coder
10/21/1997	US5680507 Device for coding a signal
10/21/1997	US5680506 Apparatus and method for speech signal analysis
10/21/1997	US5680504 Apparatus and method for storing and reproducing digital data
10/21/1997	US5680469 Method of insertion of noise and apparatus thereof
10/16/1997	WO1997038497A1 Process for encoding an audio signal digitalised at a low sampling frequency
10/16/1997	WO1997038494A1 Encoding apparatus for encoding a plurality of information signals
10/16/1997	WO1997038493A1 Encoding of a plurality of information signals
10/16/1997	WO1997038417A1 Signal coding and decoding system, particularly for a digital audio signal

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