| 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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| 03/10/1998 | US5727072 Use of noise segmentation for noise cancellation |
| 03/05/1998 | WO1998005031A3 A method and a device for the reduction impulse noise from a speech signal |
| 02/24/1998 | US5721694 Non-linear deterministic stochastic filtering method and system |
| 02/18/1998 | CN1173689A Karaoke apparatus selectively providing harmony voice to duet singing voices |
| 02/12/1998 | WO1998006090A1 Speech/audio coding with non-linear spectral-amplitude transformation |
| 02/10/1998 | US5717829 Audio signal processing apparatus |
| 02/10/1998 | US5717823 Speech-rate modification for linear-prediction based analysis-by-synthesis speech coders |
| 02/10/1998 | US5717821 Method, apparatus and recording medium for coding of separated tone and noise characteristic spectral components of an acoustic sibnal |
| 02/10/1998 | US5717818 Audio signal storing apparatus having a function for converting speech speed |
| 02/10/1998 | US5717763 Vocal mix circuit |
| 02/10/1998 | US5717724 Voice encoding and voice decoding apparatus |
| 02/05/1998 | WO1998005031A2 A method and a device for the reduction impulse noise from a speech signal |
| 02/04/1998 | EP0822538A1 Method of transforming periodic signal using smoothed spectrogram, method of transforming sound using phasing component and method of analyzing signal using optimum interpolation function |
| 02/04/1998 | CN1172422A Noise cancellation apparatus |
| 02/03/1998 | US5715412 Method of acoustically expressing image information |
| 01/29/1998 | WO1998003965A1 Method of reducing voice signal interference |
| 01/28/1998 | EP0820626A1 Waveform speech synthesis |
| 01/28/1998 | EP0713597A4 Method for recognizing a spoken word in the presence of interfering speech |
| 01/27/1998 | US5712956 Feature extraction and normalization for speech recognition |
| 01/22/1998 | WO1998002872A1 Speech detection system employing multiple determinants |
| 01/22/1998 | DE19629132A1 Verfahren zur Verringerung von Störungen eines Sprachsignals A method for reducing disturbances of a speech signal |
| 01/22/1998 | CA2260218A1 Speech detection system employing multiple determinants |
| 01/21/1998 | EP0820051A2 Method and apparatus for measuring the noise content of transmitted speech |
| 01/20/1998 | US5710862 Method and apparatus for reducing an undesirable characteristic of a spectral estimate of a noise signal between occurrences of voice signals |
| 01/15/1998 | WO1998001847A1 Voice activity detector |
| 01/15/1998 | WO1997025790A3 Noise cancellation and noise reduction apparatus |
| 01/14/1998 | CN1170203A Audio data decoding apparatus and audio data coding/decoding system |
| 01/13/1998 | US5708754 Method for real-time reduction of voice telecommunications noise not measurable at its source |
| 01/13/1998 | US5708722 Microphone expansion for background noise reduction |
| 01/13/1998 | US5708704 Speech recognition method and system with improved voice-activated prompt interrupt capability |
| 01/07/1998 | EP0817168A1 Reproducing speed changer |
| 01/07/1998 | CN1169788A Spectral subtraction noise suppression method |
| 01/06/1998 | US5706395 Adaptive weiner filtering using a dynamic suppression factor |
| 01/06/1998 | US5706394 Telecommunications speech signal improvement by reduction of residual noise |
| 01/06/1998 | US5706393 Audio signal transmission apparatus that removes input delayed using time time axis compression |
| 01/02/1998 | DE19625455A1 Speech recognition device with two channels |
| 12/30/1997 | US5704006 Method for processing speech signal using sub-converting functions and a weighting function to produce synthesized speech |
| 12/29/1997 | EP0813733A1 Speech synthesis |
| 12/24/1997 | CN1168510A Method of controlling in computer monitor with sound processing functions |
| 12/24/1997 | CN1168508A Display accessory for record playback system |
| 12/17/1997 | EP0813184A1 Method for audio synthesis |
| 12/17/1997 | EP0813183A2 Speech reproducing system |
| 12/17/1997 | EP0681730A4 Transmitted noise reduction in communications systems. |
| 12/17/1997 | CN1168204A Method and apparatus for suppressing noise in communication system |
| 12/16/1997 | US5699481 Timing recovery scheme for packet speech in multiplexing environment of voice with data applications |
| 12/16/1997 | US5699480 Apparatus for improving disturbed speech signals |
| 12/16/1997 | US5699404 Apparatus for time-scaling in communication products |
| 12/16/1997 | CA2133787C Method of accomodating for carbon/electret telephone set variability in automatic speaker verification |
| 12/16/1997 | CA2108208C Arrangement for demodulating speech signals discontinuously transmitted from a mobile unit |
| 12/11/1997 | WO1997046999A1 Non-uniform time scale modification of recorded audio |
| 12/10/1997 | EP0811964A2 Noise-reduced speech apparatus and noise-reduced speech method |
| 12/10/1997 | EP0811288A1 Apparatus and method for canceling acoustic echoes including non-linear distortions in loudspeaker telephones |
| 12/10/1997 | CN1167391A Noise-reducing talking device and method |
| 12/10/1997 | CN1167309A Rate changeable sonic code device |
| 12/09/1997 | US5696876 High-speed bit assignment method for an audio signal |
| 12/04/1997 | DE19710545C1 Time scale modification method for speech signals |
| 12/03/1997 | EP0810582A2 Voice synthesizing method, voice synthesizer and apparatus for and method of embodying a voice command into a sentence |
| 12/03/1997 | EP0809842A1 Adaptive speech filter |
| 12/02/1997 | US5694521 Variable speed playback system |
| 12/02/1997 | US5694474 Adaptive filter for signal processing and method therefor |
| 11/20/1997 | DE19702117C1 Telephone echo cancellation arrangement for speech input dialogue system |
| 11/19/1997 | EP0807307A1 A pitch post-filter |
| 11/19/1997 | EP0807305A1 Spectral subtraction noise suppression method |
| 11/19/1997 | EP0807304A1 Time compression/expansion without pitch change |
| 11/19/1997 | EP0807286A1 Communication terminal device |
| 11/18/1997 | US5689618 Advanced tools for speech synchronized animation |
| 11/12/1997 | EP0806760A1 Method and device for filtering a speech signal by equalisation, implemented by a statistical signal model |
| 11/12/1997 | EP0806759A2 Canceler of speech and noise, and speech recognition apparatus |
| 11/12/1997 | CN1164733A Sound reproducing apparatus |
| 11/11/1997 | US5687285 In an input speech signal |
| 11/11/1997 | US5687240 Method and apparatus for processing discontinuities in digital sound signals caused by pitch control |
| 11/11/1997 | US5686683 Inverse transform narrow band/broad band sound synthesis |
| 11/05/1997 | EP0804787A1 Method and device for resynthesizing a speech signal |
| 11/05/1997 | CN1164084A Sound pitch converting apparatus |
| 11/04/1997 | US5684921 Method and system for identifying a corrupted speech message signal |
| 11/04/1997 | US5684262 Pitch-modified microphone and audio reproducing apparatus |
| 10/28/1997 | US5682502 Syllable-beat-point synchronized rule-based speech synthesis from coded utterance-speed-independent phoneme combination parameters |
| 10/22/1997 | EP0707763A4 Reduction of background noise for speech enhancement |
| 10/21/1997 | US5680508 Enhancement of speech coding in background noise for low-rate speech coder |
| 10/21/1997 | US5680450 Apparatus and method for canceling acoustic echoes including non-linear distortions in loudspeaker telephones |
| 10/21/1997 | US5680393 Method and device for suppressing background noise in a voice signal and corresponding system with echo cancellation |
| 10/16/1997 | WO1997038416A1 Method and arrangement for reconstruction of a received speech signal |
| 10/16/1997 | CA2248891A1 Method and arrangement for reconstruction of a received speech signal |
| 10/15/1997 | CN1162167A Formant conversion device for correcting singing sound for imitating standard sound |
| 10/07/1997 | US5675778 Method and apparatus for audio editing incorporating visual comparison |
| 10/07/1997 | US5675659 Methods and apparatus for blind separation of delayed and filtered sources |
| 10/02/1997 | WO1997036297A1 Automated synchronization of video image sequences to new soundtracks |
| 10/02/1997 | WO1997036288A1 Image synthesis |
| 10/01/1997 | EP0797875A1 An adaptive filter for signal processing and method therefor |
| 10/01/1997 | EP0797824A1 Speech processing |
| 10/01/1997 | EP0797822A1 Method and device for enhancing the recognition of speech among speech-impaired individuals |
| 09/30/1997 | US5673325 Noise cancellation apparatus |
| 09/30/1997 | CA2036199C Voice signal processing device |
| 09/24/1997 | EP0796489A2 Method for transforming a speech signal using a pitch manipulator |
| 09/23/1997 | US5671330 Speech synthesis using glottal closure instants determined from adaptively-thresholded wavelet transforms |
| 09/18/1997 | WO1997034290A1 Noise suppressor circuit and associated method for suppressing periodic interference component portions of a communication signal |
| 09/17/1997 | EP0795851A2 Method and system for microphone array input type speech recognition |
| 09/17/1997 | CN1159639A Rate changeable vocoder |
| 09/16/1997 | US5668927 Method for reducing noise in speech signals by adaptively controlling a maximum likelihood filter for calculating speech components |
| 09/16/1997 | US5668924 Digital sound recording and reproduction device using a coding technique to compress data for reduction of memory requirements |