| 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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| 09/16/1997 | US5668923 Voice messaging system and method making efficient use of orthogonal modulation components |
| 09/09/1997 | US5666429 Energy estimator and method therefor |
| 09/03/1997 | EP0792568A1 Noise cancellation apparatus |
| 08/20/1997 | EP0790599A1 A noise suppressor and method for suppressing background noise in noisy speech, and a mobile station |
| 08/20/1997 | CN1157442A Chracter recognizing and translating system and voice recognizing and translating system |
| 08/19/1997 | US5659658 Method for converting speech using lossless tube models of vocals tracts |
| 08/19/1997 | US5659622 Method and apparatus for suppressing noise in a communication system |
| 08/13/1997 | EP0789476A2 Noise reduction arrangement |
| 08/12/1997 | US5657426 Method and apparatus for producing audio-visual synthetic speech |
| 08/12/1997 | US5657422 Voice activity detection driven noise remediator |
| 08/12/1997 | US5657420 Variable rate vocoder |
| 08/07/1997 | WO1997028527A1 A noisy speech parameter enhancement method and apparatus |
| 08/07/1997 | CA2243631A1 A noisy speech parameter enhancement method and apparatus |
| 08/06/1997 | EP0788089A2 Method and apparatus for suppressing background music or noise from the speech input of a speech recognizer |
| 08/05/1997 | US5655057 Speech recognition apparatus |
| 08/03/1997 | CA2586329A1 A portable optical scanning system worn by a user for reading indicia of differing light reflectivity |
| 07/31/1997 | WO1997022116A3 A noise suppressor and method for suppressing background noise in noisy speech, and a mobile station |
| 07/30/1997 | EP0786920A1 Transmission system of correlated signals |
| 07/24/1997 | WO1997026647A1 Reproducing speed changer |
| 07/23/1997 | EP0785659A2 Microphone signal expansion for background noise reduction |
| 07/23/1997 | EP0785631A2 Perceptual noise shaping in the time domain via LPC prediction in the frequency domain |
| 07/17/1997 | WO1997025790A2 Noise cancellation and noise reduction apparatus |
| 07/16/1997 | EP0784311A1 Method and device for voice activity detection and a communication device |
| 07/15/1997 | US5649058 Speech synthesizing method achieved by the segmentation of the linear Formant transition region |
| 07/09/1997 | CN1154173A A pitch post-filter |
| 07/09/1997 | CN1154016A Method and apparatus for blind separation of delayed and filtered sources |
| 07/08/1997 | US5647006 Mobile radio terminal comprising a speech |
| 07/02/1997 | EP0782127A2 A time-varying feature space preprocessing procedure for telephone based speech recognition |
| 07/01/1997 | US5644677 Signal processing system for performing real-time pitch shifting and method therefor |
| 07/01/1997 | US5644641 Noise cancelling device capable of achieving a reduced convergence time and a reduced residual error after convergence |
| 06/30/1997 | CA2191377A1 A time-varying feature space preprocessing procedure for telephone based speech recognition |
| 06/25/1997 | EP0780828A2 Method and system for performing speech recognition |
| 06/25/1997 | EP0780824A1 Method and system for visual display of audio data |
| 06/25/1997 | CN1152776A Method and arrangement for phoneme signal duplicating, decoding and synthesizing |
| 06/24/1997 | US5641927 Autokeying for musical accompaniment playing apparatus |
| 06/19/1997 | WO1997022117A1 Method and device for voice activity detection and a communication device |
| 06/19/1997 | WO1997022116A2 A noise suppressor and method for suppressing background noise in noisy speech, and a mobile station |
| 06/19/1997 | WO1996027155A3 Systems and methods for secure transaction management and electronic rights protection |
| 06/18/1997 | EP0779732A2 Multi-point voice conferencing system over a wide area network |
| 06/18/1997 | EP0779709A2 Method and apparatus for blind separation of delayed and filtered sources |
| 06/17/1997 | US5640486 Encoding, decoding and compression of audio-type data using reference coefficients located within a band a coefficients |
| 06/11/1997 | EP0778560A2 Device and method at speech synthesis |
| 06/04/1997 | CN1151077A Method for reproducing audio signals and apparatus therefor |
| 05/29/1997 | WO1997019444A1 Method and device for resynthesizing a speech signal |
| 05/29/1997 | WO1997019401A1 Communication terminal device |
| 05/28/1997 | DE19540859A1 Removing unwanted speech components from mixed sound signal |
| 05/27/1997 | US5633982 Removal of swirl artifacts from celp-based speech coders |
| 05/21/1997 | EP0774729A2 Character recognizing and translating system and voice recongnizing and translating system |
| 05/14/1997 | WO1997018647A1 Method and apparatus for suppressing noise in a communication system |
| 05/14/1997 | CN1149739A Speed changeable voice signal regenerator |
| 05/13/1997 | US5630017 Advanced tools for speech synchronized animation |
| 05/13/1997 | US5630015 Speech signal processing apparatus for detecting a speech signal from a noisy speech signal |
| 05/13/1997 | US5630013 Method of and apparatus for performing time-scale modification of speech signals |
| 05/13/1997 | US5630011 Quantization of harmonic amplitudes representing speech |
| 05/07/1997 | EP0772185A2 Speech decoding method and 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 |
| 05/01/1997 | WO1997015915A1 Inverse transform narrow band/broad band sound synthesis |
| 04/29/1997 | US5625746 Method and apparatus for encoding, decoding and compression of audio-type data |
| 04/23/1997 | CN1148232A Filter for speech modification or enhancement, and various apparatus, system and method using same |
| 04/23/1997 | CN1148231A Method of and apparatus for discriminating non-sounds and voiceless sounds of speech signals |
| 04/15/1997 | US5621850 Speech signal processing apparatus for cutting out a speech signal from a noisy speech signal |
| 04/15/1997 | US5621182 Karaoke apparatus converting singing voice into model voice |
| 04/09/1997 | CN1147132A Speech reproducing device capable of reproducing long-time speech with reduced memory |
| 04/08/1997 | US5619566 Voice activity detector for an echo suppressor and an echo suppressor |
| 04/02/1997 | EP0766229A2 Method and apparatus for hearing assistance with speech speed control function |
| 04/02/1997 | EP0765562A1 Adaptive microphone arrangement and method for adapting to an incoming target-noise signal |
| 04/01/1997 | US5617507 Speech segment coding and pitch control methods for speech synthesis systems |
| 04/01/1997 | US5617505 Speech signal processing apparatus for cutting out a speech signal from a noisy speech signal |
| 03/27/1997 | WO1997011538A1 An adaptive filter for signal processing and method therefor |
| 03/27/1997 | DE19533541C1 Verfahren zur automatischen Steuerung eines oder mehrerer Geräte durch Sprachkommandos oder per Sprachdialog im Echtzeitbetrieb und Vorrichtung zum Ausführen des Verfahrens A method for automatically controlling one or more devices by voice commands or voice dialogue in real time and apparatus for performing the method |
| 03/26/1997 | EP0764938A2 Perceptual noise masking based on synthesis filter frequency response |
| 03/25/1997 | US5615299 Speech recognition using dynamic features |
| 03/20/1997 | WO1997010586A1 System for adaptively filtering audio signals to enhance speech intelligibility in noisy environmental conditions |
| 03/20/1997 | WO1997010583A1 Process for automatic control of one or more devices by voice commands or by real-time voice dialog and apparatus for carrying out this process |
| 03/20/1997 | CA2231107A1 System for adaptively filtering audio signals to enhance speech intelligibility in noisy environmental conditions |
| 03/19/1997 | EP0763905A2 Subband decoding allowing for high-speed reproducing |
| 03/19/1997 | EP0763888A2 Method and circuit arrangement for processing audio signal |
| 03/19/1997 | EP0763813A1 Speech signal processing apparatus for detecting a speech signal from a noisy speech signal |
| 03/19/1997 | EP0763812A1 Speech signal processing apparatus for detecting a speech signal from a noisy speech signal |
| 03/19/1997 | EP0763811A1 Speech signal processing apparatus for detecting a speech signal from a noisy speech signal |
| 03/19/1997 | EP0763810A1 Speech signal processing apparatus for detecting a speech signal from a noisy speech signal |
| 03/19/1997 | CN1145512A Method and apparatus for reproducing speech signals and method for transmitting same |
| 03/18/1997 | US5613056 For providing an animated subject with facial images synchronized to sound |
| 03/11/1997 | US5611018 System for controlling voice speed of an input signal |
| 03/11/1997 | US5611002 Method and apparatus for manipulating an input signal to form an output signal having a different length |
| 03/11/1997 | US5610991 Noise reduction system and device, and a mobile radio station |
| 03/11/1997 | US5610909 Multistage echo canceler including time variation compensation |
| 03/06/1997 | WO1997008629A1 Methods and systems for designing and making signal-processor circuits with internal companding, and the resulting circuits |
| 03/05/1997 | EP0721727A4 Method for associating oral utterances meaningfully with writings seriatim in the audio-visual work |
| 03/05/1997 | CN1144369A Autokeying for musical accompaniment playing apparatus |
| 03/04/1997 | US5608839 Sound-synchronized video system |
| 02/26/1997 | EP0759201A1 Audio analysis/synthesis system |
| 02/26/1997 | CN1144008A 语音合成 Speech Synthesis |
| 02/18/1997 | US5604839 Method and system for improving speech recognition through front-end normalization of feature vectors |
| 02/11/1997 | US5602962 Mobile radio set comprising a speech processing arrangement |
| 02/04/1997 | US5600755 Voice codec apparatus |
| 02/04/1997 | CA2056110C Public address intelligibility system |
| 01/29/1997 | CN1141548A Method and apparatus for reducing noise in speech signal |
| 01/22/1997 | CN1140869A Method for noise reduction |
| 01/16/1997 | WO1997001939A1 Method and apparatus for time-scaling in communication products |