| 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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| 06/28/2000 | CN1258061A Automatic data route selection by voice command annotation |
| 06/27/2000 | US6081784 Methods and apparatus for encoding, decoding, encrypting and decrypting an audio signal, recording medium therefor, and method of transmitting an encoded encrypted audio signal |
| 06/27/2000 | US6081780 TTS and prosody based authoring system |
| 06/27/2000 | US6081777 Enhancement of speech signals transmitted over a vocoder channel |
| 06/27/2000 | US6081776 Speech coding system and method including adaptive finite impulse response filter |
| 06/27/2000 | CA2183282C Signal restoration using left-sided and right-sided autoregressive parameters |
| 06/27/2000 | CA2160749C Speech coding apparatus, speech decoding apparatus, speech coding and decoding method and a phase amplitude characteristic extracting apparatus for carrying out the method |
| 06/27/2000 | CA2156639C Method and apparatus for mitigating audio degradation in a communication system |
| 06/27/2000 | CA2140329C Decomposition in noise and periodic signal waveforms in waveform interpolation |
| 06/27/2000 | CA2119697C Reducing search complexity for code-excited linear prediction (celp) coding |
| 06/22/2000 | WO2000036754A1 Entropy code mode switching for frequency-domain audio coding |
| 06/22/2000 | WO2000036752A1 Variable to variable length entropy encoding |
| 06/22/2000 | WO2000011817A3 Method for transmitting information and suitable system therefor |
| 06/21/2000 | EP1011269A1 System for processing an information signal |
| 06/21/2000 | EP1010169A1 Channel gain modification system and method for noise reduction in voice communication |
| 06/20/2000 | US6078972 Control system of FIFO memories |
| 06/20/2000 | US6078882 Method and apparatus for extracting speech spurts from voice and reproducing voice from extracted speech spurts |
| 06/20/2000 | US6078881 Speech encoding and decoding method and speech encoding and decoding apparatus |
| 06/20/2000 | US6078879 Transmitter with an improved harmonic speech encoder |
| 06/15/2000 | WO2000035198A1 System for processing an information signal |
| 06/15/2000 | WO2000034944A1 Sound decoding device and sound decoding method |
| 06/15/2000 | WO1999054801A3 Method and apparatus of supporting an audio protocol in a network |
| 06/14/2000 | EP1008982A1 Voice encoder, voice decoder, voice encoder/decoder, voice encoding method, voice decoding method and voice encoding/decoding method |
| 06/14/2000 | EP1008247A1 Error concealment in digital audio receiver |
| 06/14/2000 | EP1008141A1 Reducing sparseness in coded speech signals |
| 06/14/2000 | EP1008097A1 Method and apparatus for watermarking video images |
| 06/14/2000 | CN1256778A Information distributing apparatus, information transmitting apparatus, information receiving apparatus and information distributing method |
| 06/14/2000 | CN1256494A Recording and reproducing device |
| 06/13/2000 | US6076063 Audio player and recorder employing semiconductor memory as a recording medium |
| 06/13/2000 | US6076062 Method and device for transferring and decoding a non-PCM bitstream between a digital video disc and a multi-channel reproduction apparatus |
| 06/13/2000 | US6075324 Small portable apparatus with EL device producing reduced noise |
| 06/13/2000 | CA2182428C Method and apparatus for generating dc-free sequences |
| 06/13/2000 | CA2147772C Method of and apparatus for signal recognition that compensates for mismatching |
| 06/08/2000 | WO2000033508A1 Telecommunication conferencing system and method |
| 06/08/2000 | WO2000033297A1 Enhanced waveform interpolative coder |
| 06/08/2000 | WO2000033296A1 Silence description coding for multi-rate speech codecs |
| 06/08/2000 | WO2000033293A1 Fixed-point multiplication for adpcm speech coder |
| 06/08/2000 | WO2000033037A2 System and method for characterizing, synthesizing, and/or canceling out acoustic signals from inanimate sound sources |
| 06/08/2000 | WO2000016314A3 Celp encoding/decoding method and apparatus |
| 06/08/2000 | WO2000013448A3 A method, communication system, mobile station and network element for transmitting background noise information in data transmission in data frames |
| 06/08/2000 | CA2317470A1 Telecommunication conferencing system and method |
| 06/07/2000 | EP1006665A1 Error concealment or correction of speech, image and video signals |
| 06/07/2000 | EP1006510A2 Signal encoding and decoding system |
| 06/07/2000 | EP1005724A1 Post-compression hidden data transport for video |
| 06/07/2000 | EP0917709B1 Speech coding |
| 06/07/2000 | CN2382102Y Speech enhancing device |
| 06/07/2000 | CN1256045A Method of transferring media files over communications network |
| 06/07/2000 | CN1256001A Method and device for coding lag parameter and code book preparing method |
| 06/07/2000 | CN1256000A Method and device forr emphasizing pitch |
| 06/07/2000 | CN1255673A Voice-frequency coding device, radio microphone and voice-frequency decoding device |
| 06/06/2000 | US6073094 Voice compression by phoneme recognition and communication of phoneme indexes and voice features |
| 06/06/2000 | US6073093 Combined residual and analysis-by-synthesis pitch-dependent gain estimation for linear predictive coders |
| 06/06/2000 | US6073092 Method for speech coding based on a code excited linear prediction (CELP) model |
| 06/06/2000 | US6072844 Gain control in post filtering process using scaling |
| 06/04/2000 | CA2287118A1 Error concealment or correction or speech image and video signals |
| 06/02/2000 | WO2000031996A2 Efficient in-band signaling for discontinuous transmission and configuration changes in adaptive multi-rate communications systems |
| 06/02/2000 | WO2000031720A2 Complex signal activity detection for improved speech/noise classification of an audio signal |
| 06/02/2000 | WO2000031719A2 Speech coding with comfort noise variability feature for increased fidelity |
| 06/02/2000 | WO2000031675A2 Printing and validation of self validating security documents |
| 06/02/2000 | WO1999056456A3 Alternating speech and data transmission in digital communications systems |
| 05/31/2000 | EP1005213A2 Multiple message multilevel analog signal recording and playback system containing configurable analog processing functions |
| 05/31/2000 | EP1005022A1 Speech encoding method and speech encoding system |
| 05/31/2000 | EP1005021A2 Method and apparatus to extract formant-based source-filter data for coding and synthesis employing cost function and inverse filtering |
| 05/31/2000 | EP1005020A2 Subband audio coding apparatus and wireless microphone using the same |
| 05/31/2000 | EP1004077A1 System and method for communicating digitally-encoded acoustic information across a network between computers |
| 05/31/2000 | CN1255226A 语音编码 Speech Coding |
| 05/31/2000 | CN1255225A Subscriber handoff between multiple access communications system |
| 05/31/2000 | CN1254877A Portable MP3 player with multiple functions |
| 05/30/2000 | US6070137 Integrated frequency-domain voice coding using an adaptive spectral enhancement filter |
| 05/30/2000 | CA2184949C Secure spread spectrum watermarking for multimedia data |
| 05/27/2000 | CA2435224A1 Speech encoding method and speech encoding system |
| 05/25/2000 | WO2000030361A1 Encoding auxiliary information with frame-based encoded audio information |
| 05/25/2000 | WO2000030291A1 Secure watermark method and apparatus for digital signals |
| 05/25/2000 | WO2000030287A1 Processing received data in a distributed speech recognition process |
| 05/25/2000 | WO2000030264A1 Signal processing apparatus and method |
| 05/25/2000 | WO2000030075A1 Closed-loop variable-rate multimode predictive speech coder |
| 05/25/2000 | WO2000030074A1 Low bit-rate coding of unvoiced segments of speech |
| 05/25/2000 | WO2000030073A1 Synthesis of speech from pitch prototype waveforms by time-synchronous waveform interpolation |
| 05/25/2000 | WO2000030072A1 Mitigating errors in a distributed speech recognition process |
| 05/25/2000 | WO2000016315A3 Linear predictive analysis-by-synthesis encoding method and encoder |
| 05/24/2000 | EP1003324A2 Forgery-resistant documents with images conveying secret data and related methods |
| 05/24/2000 | EP1003175A1 Recording and reproducing apparatus |
| 05/24/2000 | EP1002312A1 Transmitter with an improved harmonic speech encoder |
| 05/24/2000 | EP1002237A1 Speech coding apparatus and speech decoding apparatus |
| 05/24/2000 | EP0813736B1 Depth-first algebraic-codebook search for fast coding of speech |
| 05/24/2000 | CN1254433A A high resolution post processing method for speech decoder |
| 05/24/2000 | CN1254160A Electronic equipment with recording and playback function |
| 05/23/2000 | US6067519 Waveform speech synthesis |
| 05/23/2000 | US6067518 Linear prediction speech coding apparatus |
| 05/23/2000 | US6067511 LPC speech synthesis using harmonic excitation generator with phase modulator for voiced speech |
| 05/23/2000 | CA2159557C Coding apparatus having adaptive coding at different bit rates and pitch emphasis |
| 05/17/2000 | EP1001549A2 Audio signal processing apparatus |
| 05/17/2000 | EP1001542A1 Voice decoder and voice decoding method |
| 05/17/2000 | EP1001541A1 Sound decoder and sound decoding method |
| 05/17/2000 | CN1253418A Block size determination used in audio frequency conversion coding and self adapting method |
| 05/16/2000 | US6064962 Formant emphasis method and formant emphasis filter device |
| 05/16/2000 | US6064956 Method to determine the excitation pulse positions within a speech frame |
| 05/16/2000 | US6064954 Digital audio signal coding |
| 05/16/2000 | US6064737 Anti-piracy system for wireless telephony |
| 05/16/2000 | US6064698 Method and apparatus for coding |