| 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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| 03/18/1993 | WO1993005503A1 Multi-channel signal separation |
| 03/16/1993 | US5195138 Voice signal processing device |
| 03/04/1993 | WO1993004467A1 Audio analysis/synthesis system |
| 03/03/1993 | EP0529729A1 Device having functional means supported by ancillary message reproduction means |
| 02/25/1993 | DE4227826A1 Digital acoustic signal processor esp. for hearing aid - provides choice of reprodn. of speech in real time or at speed adapted to hearing defect |
| 02/24/1993 | EP0528324A2 Auditory model for parametrization of speech |
| 02/23/1993 | US5189702 Voice processing apparatus for varying the speed with which a voice signal is reproduced |
| 02/20/1993 | CA2076072A1 Auditory model for parametrization of speech |
| 02/18/1993 | WO1993003480A1 Speech pattern matching in non-white noise |
| 02/17/1993 | EP0527529A2 Method and apparatus for manipulating duration of a physical audio signal, and a storage medium containing a representation of such physical audio signal |
| 02/17/1993 | EP0527527A2 Method and apparatus for manipulating pitch and duration of a physical audio signal |
| 02/09/1993 | US5185848 Noise reduction system using neural network |
| 02/04/1993 | WO1993002446A1 Method for time-scale modification of signals |
| 02/03/1993 | EP0525544A2 Method for time-scale modification of signals |
| 01/13/1993 | EP0522213A1 System for separating speech from background noise |
| 01/07/1993 | WO1993000142A1 Method and device for transducing sound signals into an image |
| 12/29/1992 | US5175769 Method for time-scale modification of signals |
| 12/23/1992 | WO1992022891A1 Variable rate vocoder |
| 12/23/1992 | EP0362315B1 Device for monitoring acoustic signal processing systems |
| 12/23/1992 | CA2635914A1 Error masking in a variable rate vocoder |
| 10/20/1992 | US5157728 Automatic length-reducing audio delay line |
| 10/14/1992 | CN1065370A Public address intelligibility system |
| 10/06/1992 | US5153922 Time varying symbol |
| 09/30/1992 | EP0505645A1 Public address intelligibility enhancement system |
| 09/23/1992 | EP0504684A2 Digital pitch shifter |
| 09/22/1992 | US5150323 Signal processor |
| 09/15/1992 | US5148488 Method and filter for enhancing a noisy speech signal |
| 09/15/1992 | US5148484 Signal processing apparatus for separating voice and non-voice audio signals contained in a same mixed audio signal |
| 09/15/1992 | US5148483 Method for detecting suicidal predisposition |
| 09/08/1992 | US5146502 Speech pattern correction device for deaf and voice-impaired |
| 09/03/1992 | WO1992015155A1 Interference reduction system |
| 09/03/1992 | WO1992015077A1 Document interpreting systems |
| 08/25/1992 | US5142657 Apparatus for drilling pronunciation |
| 08/13/1992 | DE4040107C1 Analysing human singing and speech voice strength - forms relation of preset formant level and total voice sound level in real time |
| 07/23/1992 | DE4101022A1 Variable speed reproduction of audio signal without spectral change - dividing digitised audio signal into blocks, performing transformation, and adding or omitting blocks before reverse transformation |
| 07/21/1992 | US5133013 Noise reduction by using spectral decomposition and non-linear transformation |
| 07/14/1992 | US5131042 Music tone pitch shift apparatus |
| 06/30/1992 | US5127056 Spiral audio spectrum display system |
| 06/30/1992 | US5127054 Speech quality improvement for voice coders and synthesizers |
| 06/25/1992 | WO1992010830A1 Methods for speech quantization and error correction |
| 06/16/1992 | US5123048 Speech processing apparatus |
| 06/03/1992 | EP0312569B1 Method and apparatus for improving voice intelligibility in high noise environments |
| 05/19/1992 | CA1301337C Adaptive method and apparatus for coding speech |
| 05/19/1992 | CA1301072C Speech coding transmission equipment |
| 05/13/1992 | EP0485315A2 Method and apparatus for speech analysis and speech recognition |
| 05/12/1992 | US5113449 Method and apparatus for altering voice characteristics of synthesized speech |
| 05/06/1992 | EP0484070A2 Editing compressed voice information |
| 05/06/1992 | EP0470975A4 Methods and apparatus for reconstructing non-quantized adaptively transformed voice signals |
| 05/05/1992 | US5111409 Authoring and use systems for sound synchronized animation |
| 04/02/1992 | WO1992006467A1 Automatic length-reducing audio delay line |
| 03/17/1992 | US5097510 Artificial intelligence pattern-recognition-based noise reduction system for speech processing |
| 03/17/1992 | US5097326 Image-audio transformation system |
| 03/11/1992 | EP0473664A1 Analysis of waveforms. |
| 03/11/1992 | EP0473611A1 Adaptive transform coder having long term predictor |
| 03/04/1992 | EP0472578A1 Apparatus and methods for the generation of stabilised images from waveforms. |
| 02/26/1992 | EP0472356A1 Speech recognition apparatus for a vehicle, using a microphone arrangement to determine the seat from which a command is generated |
| 02/26/1992 | EP0472193A2 Translation device based on voice recognition and voice synthesis |
| 02/25/1992 | US5091950 Arabic language translating device with pronunciation capability using language pronunciation rules |
| 02/25/1992 | US5091948 Speaker recognition with glottal pulse-shapes |
| 02/25/1992 | US5091944 Apparatus for linear predictive coding and decoding of speech using residual wave form time-access compression |
| 02/20/1992 | DE4126902A1 Speech interval establishment unit for speech recognition system - operates in two stages on filtered, multiplexed and digitised signals from speech and background noise microphones |
| 02/19/1992 | EP0470975A1 Methods and apparatus for reconstructing non-quantized adaptively transformed voice signals. |
| 02/12/1992 | EP0470245A1 Method for spectral estimation to improve noise robustness for speech recognition. |
| 02/04/1992 | US5086475 Apparatus for generating, recording or reproducing sound source data |
| 01/14/1992 | US5081681 Method and apparatus for phase synthesis for speech processing |
| 01/08/1992 | EP0465057A1 Low-delay code-excited linear predictive coding of wideband speech at 32kbits/sec |
| 01/02/1992 | EP0463825A2 System for developing sounds |
| 12/17/1991 | US5073938 Process for varying speech speed and device for implementing said process |
| 12/04/1991 | EP0459382A2 Speech signal processing apparatus for detecting a speech signal from a noisy speech signal |
| 12/04/1991 | EP0459364A1 Noise signal prediction system |
| 12/04/1991 | EP0459362A1 Voice signal processor |
| 12/04/1991 | EP0459215A1 Voice/noise splitting apparatus |
| 10/15/1991 | US5058168 Overflow speech detecting apparatus for speech recognition |
| 10/15/1991 | US5057940 Image signal encoding/decoding system |
| 10/15/1991 | CA1290844C Method and apparatus for improving voice intelligibility in high noise environments |
| 10/09/1991 | EP0450533A2 Speech synthesis by segmentation on linear formant transition region |
| 10/09/1991 | EP0450367A2 Speech analysis method and apparatus |
| 10/09/1991 | EP0216862B1 Video display of two-channel audio signals |
| 10/01/1991 | US5054085 Preprocessing system for speech recognition |
| 10/01/1991 | US5054083 Voice verification circuit for validating the identity of an unknown person |
| 10/01/1991 | US5054075 Subband decoding method and apparatus |
| 09/26/1991 | DE4106405A1 Noise suppressor for speech identification system - subtracts microphone signal data from loudspeaker signal data |
| 09/18/1991 | EP0239394B1 Speech synthesis system |
| 09/05/1991 | WO1991013430A1 Method for spectral estimation to improve noise robustness for speech recognition |
| 09/05/1991 | CA2051386A1 Method for spectral estimation to improve noise robustness for speech recognition |
| 08/21/1991 | EP0442342A1 Voice signal processing device |
| 08/20/1991 | US5042069 Methods and apparatus for reconstructing non-quantized adaptively transformed voice signals |
| 08/14/1991 | EP0441342A2 Noise reduction apparatus for eliminating periodic noise |
| 08/07/1991 | EP0439592A1 Adaptive network for in-band signal separation |
| 08/07/1991 | EP0155970B1 Apparatus for reproducing audio signal |
| 07/31/1991 | EP0439073A1 Voice signal processing device |
| 07/30/1991 | US5035242 Method and apparatus for sound responsive tactile stimulation of deaf individuals |
| 07/24/1991 | EP0438174A2 Signal processing device |
| 07/09/1991 | US5031113 Text-processing system |
| 06/25/1991 | US5027408 Speech-recognition circuitry employing phoneme estimation |
| 06/12/1991 | EP0431890A2 A voice recognition system |
| 06/07/1991 | CA2031641A1 System for separating speech from background noise |
| 05/22/1991 | EP0427953A2 Apparatus and method for speech rate modification |
| 05/15/1991 | EP0348396A4 Radio receiver speech amplifier circuit |
| 05/07/1991 | US5014318 Apparatus for checking audio signal processing systems |