| Patents for G10L 21 - Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility (18,985) |
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| 01/19/1999 | US5862232 For shifting a pitch of sound signal by a predetermined rate |
| 01/14/1999 | WO1999001942A2 A method of noise reduction in speech signals and an apparatus for performing the method |
| 01/14/1999 | WO1999001863A1 Method and apparatus for speech enhancement in a speech communication system |
| 01/14/1999 | WO1999001862A1 Method for searching a noise model in noisy sound signals |
| 01/13/1999 | EP0890171A1 Automated synchronization of video image sequences to new soundtracks |
| 01/13/1999 | EP0890168A1 Image synthesis |
| 01/13/1999 | EP0725963B1 Language analysis instrument |
| 01/13/1999 | CN1204834A Device for wave envelope aggravation treatment |
| 01/05/1999 | US5857167 Combined speech coder and echo canceler |
| 01/02/1999 | CA2235455A1 Method and apparatus for speech enhancement in a speech communication system |
| 12/30/1998 | WO1998059431A1 Methods and apparatus for echo suppression |
| 12/30/1998 | EP0886852A1 Noise suppressor circuit and associated method for suppressing periodic interference component portions of a communication signal |
| 12/30/1998 | EP0797822A4 Method and device for enhancing the recognition of speech among speech-impaired individuals |
| 12/29/1998 | US5854999 Method and system for speech recognition with compensation for variations in the speech environment |
| 12/23/1998 | WO1998058450A1 Methods and apparatus for blind signal separation |
| 12/23/1998 | WO1998058448A1 Method and apparatus for low complexity noise reduction |
| 12/23/1998 | WO1998043236A3 Method of speech synthesis |
| 12/23/1998 | WO1998043235A3 Device and method for prosody generation at visual synthesis |
| 12/23/1998 | EP0886263A2 Environmentally compensated speech processing |
| 12/23/1998 | EP0847559A4 Methods and systems for designing and making signal-processor circuits with internal companding, and the resulting circuits |
| 12/23/1998 | CA2294262A1 Methods and apparatus for blind signal separation |
| 12/22/1998 | CA2138698C Telephone set with background noise suppression function |
| 12/17/1998 | WO1998057436A2 Source coding enhancement using spectral-band replication |
| 12/16/1998 | EP0884926A1 Method and device for optimized processing of an interfering signal when recording sound |
| 12/16/1998 | EP0884886A2 Echo canceler employing multiple step gains |
| 12/16/1998 | EP0883959A1 Telecommunications system |
| 12/16/1998 | CN1202064A Voice recognition rate increasing method in call initation of voice recognition calling device |
| 12/16/1998 | CN1202051A Echo canceler employing multiple step gains |
| 12/16/1998 | CN1041266C Public address intelligibility system |
| 12/16/1998 | CA2239357A1 Environmentally compensated speech processing |
| 12/10/1998 | WO1998055991A1 Method and apparatus for reproducing a recorded voice with alternative performance attributes and temporal properties |
| 12/09/1998 | EP0883130A2 Voice data processing control device and recording medium recording a control program for controlling voice data processing |
| 12/09/1998 | EP0883107A1 Sound source vector generator, voice encoder, and voice decoder |
| 12/09/1998 | EP0883106A1 Sound reproducing speed converter |
| 12/09/1998 | EP0882337A1 Voice messaging system and method making efficient use of orthogonal modulation components |
| 12/09/1998 | CN1201547A System for adaptively filtering audio signals to enhance speech intelligibility in noisy environmental conditions |
| 12/08/1998 | US5848392 Audio signal processing circuit for changing the pitch of recorded speech |
| 12/08/1998 | US5848163 Method and apparatus for suppressing background music or noise from the speech input of a speech recognizer |
| 12/08/1998 | US5848130 System and method for enhanced intelligibility of voice messages |
| 12/08/1998 | US5847303 Voice processor with adaptive configuration by parameter setting |
| 12/03/1998 | WO1998054696A1 Improvements in, or relating to, visual speech synthesis |
| 12/02/1998 | EP0860003A4 Inverse transform narrow band/broad band sound synthesis |
| 12/02/1998 | CN1041042C Noise cancellation apparatus, and telephone set having same |
| 12/01/1998 | US5845247 Reproducing apparatus |
| 12/01/1998 | US5844996 Active electronic noise suppression system and method for reducing snoring noise |
| 11/25/1998 | EP0880246A2 Compressed code decoding device and audio decoding device |
| 11/24/1998 | US5842172 Method and apparatus for modifying the play time of digital audio tracks |
| 11/19/1998 | WO1998052187A1 Audio coding systems and methods |
| 11/19/1998 | WO1998035340A3 Voice conversion system and methodology |
| 11/19/1998 | WO1998035339A3 A system and methodology for prosody modification |
| 11/18/1998 | EP0878790A1 Voice coding system and method |
| 11/17/1998 | US5839103 Speaker verification system using decision fusion logic |
| 11/17/1998 | US5839101 Noise suppressor and method for suppressing background noise in noisy speech, and a mobile station |
| 11/12/1998 | DE19753454A1 Text-speech conversion system for multimedia |
| 11/11/1998 | EP0877498A2 RDS-TMC broadcast receiver with a memory for speech segments |
| 11/10/1998 | US5835608 Signal separating system |
| 11/05/1998 | WO1998049670A1 Targeted vocal transformation |
| 11/05/1998 | WO1998049666A1 Method and system for making an audio-visual work with a series of visual word symbols coordinated with oral word utterances and such audio-visual work |
| 11/05/1998 | CA2287315A1 Method and system for making an audio-visual work with a series of visual word symbols coordinated with oral word utterances and such audio-visual work |
| 11/03/1998 | US5832437 Continuous and discontinuous sine wave synthesis of speech signals from harmonic data of different pitch periods |
| 10/29/1998 | WO1998048527A2 Echo cancellation mechanism |
| 10/28/1998 | CN1197526A Speaker verification system |
| 10/27/1998 | US5828997 Method for converting a source signal to a symbolic signal |
| 10/27/1998 | US5828995 Method and apparatus for intelligible fast forward and reverse playback of time-scale compressed voice messages |
| 10/27/1998 | US5828994 Non-uniform time scale modification of recorded audio |
| 10/22/1998 | WO1998047276A1 Method for cancelling multichannel acoustic echo and multichannel acoustic echo canceller |
| 10/22/1998 | WO1998022935A3 Formant extraction using peak-picking and smoothing techniques |
| 10/20/1998 | US5826234 Device and method for dubbing an audio-visual presentation which generates synthesized speech and corresponding facial movements |
| 10/20/1998 | US5826231 Method and device for vocal synthesis at variable speed |
| 10/20/1998 | US5825897 Noise cancellation apparatus |
| 10/20/1998 | US5825320 Gain control method for audio encoding device |
| 10/15/1998 | WO1998045997A1 Radiotelephone voice control device, in particular for use in a motor vehicle |
| 10/14/1998 | EP0871293A2 Audio processing for audio visual equipment |
| 10/14/1998 | EP0870300A1 Speaker verification system |
| 10/14/1998 | EP0870299A1 A communication system and method using a speaker dependent time-scaling technique |
| 10/14/1998 | EP0870298A2 Noise cancellation and noise reduction apparatus |
| 10/14/1998 | EP0640237B1 Method of converting speech |
| 10/13/1998 | US5822732 Filter for speech modification or enhancement, and various apparatus, systems and method using same |
| 10/08/1998 | WO1998044483A1 Time scale modification of audiovisual playback and teaching listening comprehension |
| 10/07/1998 | EP0869476A1 Comfort noise generation device and speech codec including elements of such device |
| 10/07/1998 | EP0807307A4 A pitch post-filter |
| 10/01/1998 | WO1998043239A1 A method for enhancing 3-d localization of speech |
| 10/01/1998 | WO1998043236A2 Method of speech synthesis |
| 10/01/1998 | WO1998043235A2 Device and method for prosody generation at visual synthesis |
| 09/30/1998 | EP0867860A2 Method and device for voice-operated remote control with interference compensation of appliances |
| 09/30/1998 | CN1194507A Device for producing confortable noise and voice coding and decoding device including said device |
| 09/29/1998 | US5813862 Method and device for enhancing the recognition of speech among speech-impaired individuals |
| 09/29/1998 | CA2137300C Speech recognition using bio-signals |
| 09/24/1998 | WO1998041976A1 Speaking speed changing method and device |
| 09/22/1998 | US5812970 Method based on pitch-strength for reducing noise in predetermined subbands of a speech signal |
| 09/22/1998 | US5812969 Process for balancing the loudness of digitally sampled audio waveforms |
| 09/22/1998 | US5811707 Effect adding system |
| 09/22/1998 | CA2100154C Switched signal processing circuit |
| 09/16/1998 | EP0865033A2 Normalization of speech signals |
| 09/16/1998 | EP0865026A2 Method for modifying speech speed |
| 09/15/1998 | US5809460 Speech decoder having an interpolation circuit for updating background noise |
| 09/15/1998 | US5809454 Audio reproducing apparatus having voice speed converting function |
| 09/15/1998 | US5808575 Gain varying device capable of varying each gain of analog and digital signals |
| 09/11/1998 | WO1998039946A1 Device and method for processing speech |
| 09/11/1998 | WO1998039768A1 A high resolution post processing method for a speech decoder |