| 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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| 06/03/1999 | WO1999027523A1 Method for reconstructing sound signals after noise abatement |
| 06/03/1999 | WO1999027522A2 Audio processing arrangement with multiple sources |
| 06/03/1999 | CA2306095A1 Voice recognition unit for audience measurement system |
| 06/02/1999 | EP0920173A2 Enhanced telecommunications network |
| 06/02/1999 | EP0920127A2 Speech band division decoder |
| 06/02/1999 | EP0919988A2 Speech playback speed change using wavelet coding preferably sub-band coding |
| 06/02/1999 | EP0919096A1 Method for cancelling multichannel acoustic echo and multichannel acoustic echo canceller |
| 06/01/1999 | US5909646 System for estimating signals received in the form of mixed signals |
| 06/01/1999 | CA2156593C Postfilter and method of postfiltering |
| 05/28/1999 | CA2248514A1 Speech playback speed change using wavelet coding, preferably sub-band coding |
| 05/26/1999 | EP0918317A1 Frequency filtering method using a Wiener filter applied to noise reduction of audio signals |
| 05/25/1999 | US5907826 Speaker-independent speech recognition using vowel/consonant segmentation based on pitch intensity values |
| 05/25/1999 | US5907823 Method and circuit arrangement for adjusting the level or dynamic range of an audio signal |
| 05/25/1999 | US5907624 Noise canceler capable of switching noise canceling characteristics |
| 05/25/1999 | US5907351 Method for selecting a transmission signal |
| 05/18/1999 | US5905969 Process and system of adaptive filtering by blind equalization of a digital telephone signal and their applications |
| 05/18/1999 | CA2090159C Method and apparatus for coding audio signals based on perceptual model |
| 05/14/1999 | WO1999023642A1 Method for reducing interference in acoustic signals by means of an adaptive filter method involving spectral subtraction |
| 05/14/1999 | WO1999022561A2 A method and apparatus for audio representation of speech that has been encoded according to the lpc principle, through adding noise to constituent signals therein |
| 05/12/1999 | CN1216380A Feature extraction apparatus and method and pattern recognition apparatus and method |
| 05/11/1999 | US5903819 Noise suppressor circuit and associated method for suppressing periodic interference component portions of a communication signal |
| 05/11/1999 | CA2138818C Voice activity detection driven noise remediator |
| 05/06/1999 | WO1999022360A1 Pitch detection and intonation correction apparatus and method |
| 05/06/1999 | EP0913951A2 Method for suppressing narrow-band, fixed-frequency interference in an audio signal |
| 05/06/1999 | EP0913810A2 Feature extraction and pattern recognition |
| 05/06/1999 | EP0912974A1 Method of reducing voice signal interference |
| 05/06/1999 | DE19747885A1 Verfahren zur Reduktion von Störungen akustischer Signale mittels der adaptiven Filter-Methode der spektralen Subtraktion A method of reducing acoustic interference signals by means of the adaptive filter method of spectral subtraction |
| 05/05/1999 | CN1216189A Telecommunications system |
| 05/04/1999 | US5899977 Acoustic signal processing apparatus wherein pre-set acoustic characteristics are added to input voice signals |
| 05/04/1999 | US5899967 Speech decoding device to update the synthesis postfilter and prefilter during unvoiced speech or noise |
| 05/04/1999 | US5899966 Speech decoding method and apparatus to control the reproduction speed by changing the number of transform coefficients |
| 04/29/1999 | WO1999021170A1 System and method for auditorially representing pages of sgml data |
| 04/29/1999 | WO1999021169A1 System and method for auditorially representing pages of html data |
| 04/29/1999 | WO1999021166A1 System and method for representing complex information auditorially |
| 04/28/1999 | EP0911979A2 Audio signal processor |
| 04/28/1999 | EP0911807A2 Sound synthesizing method and apparatus, and sound band expanding method and apparatus |
| 04/28/1999 | CN1215490A Method and arrangement for reconstruction of received speech signal |
| 04/21/1999 | EP0910065A1 Speaking speed changing method and device |
| 04/21/1999 | EP0909442A1 Voice activity detector |
| 04/21/1999 | EP0870300A4 Speaker verification system |
| 04/21/1999 | CN1214784A Image synthesis |
| 04/20/1999 | US5895447 Speech recognition using thresholded speaker class model selection or model adaptation |
| 04/20/1999 | CA2141316C Method and apparatus for reducing an undesirable characteristic of a spectral estimate of a noise signal between occurrences of voice signals |
| 04/14/1999 | EP0908842A2 Code image recording apparatus having a microphone and a printer contained in a same cabinet |
| 04/08/1999 | WO1999017278A1 Method and apparatus for improving speech intelligibility |
| 04/07/1999 | EP0907161A1 Apparatus for processing audio signal |
| 04/07/1999 | CN1213121A Apparatus for processing audio signal |
| 04/01/1999 | WO1999016050A1 Scalable and embedded codec for speech and audio signals |
| 03/30/1999 | US5890111 Enhancement of esophageal speech by injection noise rejection |
| 03/30/1999 | US5889223 Karaoke apparatus converting gender of singing voice to match octave of song |
| 03/25/1999 | WO1999014744A1 Method for conditioning a digital speech signal |
| 03/25/1999 | WO1999014739A1 Method for suppressing noise in a digital speech signal |
| 03/25/1999 | WO1999014738A1 Method for suppressing noise in a digital speech signal |
| 03/25/1999 | WO1999001942A3 A method of noise reduction in speech signals and an apparatus for performing the method |
| 03/25/1999 | CA2304571A1 Method for suppressing noise in a digital speech signal |
| 03/25/1999 | CA2304015A1 Method for suppressing noise in a digital speech signal |
| 03/25/1999 | CA2304013A1 Method for conditioning a digital speech signal |
| 03/17/1999 | EP0902414A2 Announcement system and method for driving it |
| 03/16/1999 | US5884267 Automated speech alignment for image synthesis |
| 03/16/1999 | US5884255 Speech detection system employing multiple determinants |
| 03/11/1999 | WO1999012156A1 Reducing sparseness in coded speech signals |
| 03/11/1999 | WO1999012155A1 Channel gain modification system and method for noise reduction in voice communication |
| 03/10/1999 | EP0901267A2 The detection of the speech activity of a source |
| 03/10/1999 | CN1210638A Portable radio telephone equipment and control thereof |
| 03/10/1999 | CN1210608A Noisy speech parameter enhancement method and apparatus |
| 03/09/1999 | US5880788 Automated synchronization of video image sequences to new soundtracks |
| 03/04/1999 | WO1999011045A1 Telephone handset noise suppression |
| 03/03/1999 | EP0899718A2 Nonlinear filter for noise suppression in linear prediction speech processing devices |
| 03/02/1999 | US5878396 Method and apparatus for synthetic speech in facial animation |
| 03/02/1999 | US5878389 Method and system for generating an estimated clean speech signal from a noisy speech signal |
| 02/28/1999 | CA2244008A1 Nonlinear filter for noise suppression in linear prediction speech pr0cessing devices |
| 02/24/1999 | EP0898401A2 Method of interfering signal reduction during transmission of data signals |
| 02/24/1999 | EP0897574A1 A noisy speech parameter enhancement method and apparatus |
| 02/23/1999 | US5875427 Voice-generating/document making apparatus voice-generating/document making method and computer-readable medium for storing therein a program having a computer execute voice-generating/document making sequence |
| 02/23/1999 | US5874950 Method and system for graphically displaying audio data on a monitor within a computer system |
| 02/22/1999 | CA2242550A1 Procedure for reducing interference in the transmission of an electrical communication signal |
| 02/17/1999 | CN1208490A Sound reproducing speed converter |
| 02/17/1999 | CN1208288A Audio decoding device, signal processing device sound image localization device, audio image control method |
| 02/16/1999 | US5873059 Method and apparatus for decoding and changing the pitch of an encoded speech signal |
| 02/11/1999 | WO1998048527A3 Echo cancellation mechanism |
| 02/10/1999 | EP0896322A2 Method and system for aligning natural and synthetic video to speech synthesis |
| 02/10/1999 | EP0870299A4 A communication system and method using a speaker dependent time-scaling technique |
| 02/09/1999 | US5870704 Frequency-domain spectral envelope estimation for monophonic and polyphonic signals |
| 02/04/1999 | WO1999005831A1 Method and device for blind equalizing of transmission channel effects on a digital speech signal |
| 02/03/1999 | CN1207195A Sound source vector generator, voice encoder, and voice decoder |
| 02/02/1999 | US5867815 Method and device for controlling the levels of voiced speech, unvoiced speech, and noise for transmission and reproduction |
| 01/27/1999 | EP0893791A2 Methods for encoding speech, for enhancing speech and for synthesizing speech |
| 01/27/1999 | EP0892974A1 Method and arrangement for reconstruction of a received speech signal |
| 01/26/1999 | US5864820 Method, system and product for mixing of encoded audio signals |
| 01/26/1999 | US5864806 Decision-directed frame-synchronous adaptive equalization filtering of a speech signal by implementing a hidden markov model |
| 01/26/1999 | US5864804 Voice recognition system |
| 01/26/1999 | US5864794 Signal encoding and decoding system using auditory parameters and bark spectrum |
| 01/26/1999 | US5864792 Speed-variable speech signal reproduction apparatus and method |
| 01/26/1999 | US5864790 Method for enhancing 3-D localization of speech |
| 01/26/1999 | US5864343 Method and apparatus for generating three dimensional effects in a two dimensional graphical user interface |
| 01/21/1999 | WO1999003093A1 Combined speech coder and echo canceler |
| 01/21/1999 | WO1999003091A1 Methods and apparatus for measuring signal level and delay at multiple sensors |
| 01/21/1999 | CA2297655A1 Combined speech coder and echo canceler |
| 01/20/1999 | EP0809842A4 Adaptive speech filter |
| 01/20/1999 | CN1205599A Compressed code decoding device and audio decoding device |