Patents
Sitemap › G10 - Musical instruments; Acoustics › G10L - Speech analysis or synthesis; Speech recognition; Speech or voice processing; Speech or audio coding or decoding › G10L 25 - Speech or voice analysis techniques not restricted to a single one of groups
Patents for G10L 25 - Speech or voice analysis techniques not restricted to a single one of groups (4,910)
09/1999
09/22/1999EP0944036A1 Method and device for detecting voice sections, and speech velocity conversion method and device utilizing said method and device
09/02/1999WO1999044191A1 System and method for noise threshold adaptation for voice activity detection in nonstationary noise environments
09/01/1999EP0938831A1 Hearing-adapted quality assessment of audio signals
09/01/1999EP0938727A1 Speech processing system
09/01/1999EP0691024B1 A method and apparatus for speaker recognition
08/1999
08/31/1999US5946650 Efficient pitch estimation method
08/25/1999EP0649558B1 Transmission system comprising at least a coder
08/25/1999EP0649557B1 Transmission system comprising at least a coder
08/24/1999US5943647 Speech recognition based on HMMs
08/19/1999WO1999041844A1 A neural network based method for exponent coding in a transform coder for high quality audio
08/17/1999US5940792 Nonintrusive testing of telecommunication speech by determining deviations from invariant characteristics or relationships
08/12/1999WO1999030415A3 Noise reduction method and apparatus
08/11/1999CN1225738A Device for determining quality of output signal to be generated by a signal processing circuit, and method therefor
08/11/1999CN1225737A Method and device for detecting voice sections, and speech velocity conversion method and device utilizing said method and device
08/11/1999CN1225736A 语音活动检测器 Voice activity detector
08/04/1999EP0932964A1 Method and device for blind equalizing of transmission channel effects on a digital speech signal
08/04/1999EP0932896A2 Method, device and system for supplementary speech parameter feedback for coder parameter generating systems used in speech synthesis
08/03/1999US5933801 Method for transforming a speech signal using a pitch manipulator
07/1999
07/27/1999US5930369 Secure spread spectrum watermarking for multimedia data
07/21/1999EP0719439B1 Voice activity detector
07/21/1999CN1044293C Method and apparatus for encoding/decoding of background sounds
07/15/1999WO1999035639A1 A vocoder-based voice recognizer
07/14/1999EP0697125B1 Process for vector quantization, especially of voice signals
07/14/1999CN1222995A Communication network for transmitting speech signals
07/07/1999EP0624866B1 Method for frequency analysis
06/1999
06/23/1999EP0924699A2 Digital audio tone evaluating system
06/17/1999WO1999030415A2 Noise reduction method and apparatus
06/15/1999US5913188 Apparatus and method for determining articulatory-orperation speech parameters
06/09/1999EP0801788B1 Speech coding method using synthesis analysis
06/09/1999EP0760150B1 Computer system and computer-implemented process for phonology-based automatic speech recognition
06/09/1999CN1218945A Identification of static and non-static signals
06/03/1999WO1999027521A1 Speech coding method and terminals for implementing said method
06/02/1999EP0919052A1 A method and a system for speech-to-speech conversion
06/02/1999EP0815553B1 Method of detecting a pause between two signal patterns on a time-variable measurement signal
05/1999
05/20/1999DE19750536A1 Speech supporting device for patients with assisted breathing, e.g. quadriplegic
05/19/1999EP0916206A1 Process and device for evaluating the quality of a transmitted voice signal
05/18/1999US5905969 Process and system of adaptive filtering by blind equalization of a digital telephone signal and their applications
05/12/1999EP0801790B1 Speech coding method using synthesis analysis
04/1999
04/29/1999WO1999021173A1 Signal processing
04/21/1999EP0909442A1 Voice activity detector
03/1999
03/25/1999WO1999014744A1 Method for conditioning a digital speech signal
03/25/1999WO1999014739A1 Method for suppressing noise in a digital speech signal
03/25/1999WO1999014737A1 Method for detecting speech activity
03/25/1999CA2304015A1 Method for suppressing noise in a digital speech signal
03/25/1999CA2304013A1 Method for conditioning a digital speech signal
03/25/1999CA2304012A1 Method for detecting speech activity
03/17/1999EP0901678A1 Signal processing arrangements
03/17/1999EP0901677A1 Device for determining the quality of an output signal to be generated by a signal processing circuit, and also method
03/16/1999US5884257 Voice recognition and voice response apparatus using speech period start point and termination point
03/11/1999WO1999012155A1 Channel gain modification system and method for noise reduction in voice communication
03/04/1999WO1999010719A1 Method and apparatus for hybrid coding of speech at 4kbps
03/02/1999US5878388 Voice analysis-synthesis method using noise having diffusion which varies with frequency band to modify predicted phases of transmitted pitch data blocks
02/1999
02/24/1999EP0677202B1 Discriminating between stationary and non-stationary signals
02/16/1999US5873062 User independent, real-time speech recognition system and method
02/11/1999WO1998048407A3 Speech detection in a telecommunication system
02/11/1999DE19730518C1 Speech pause recognition method
02/10/1999EP0895672A2 Communication network for transmitting speech signals
02/10/1999EP0655159B1 Rejected frame concealment
02/04/1999WO1999005831A1 Method and device for blind equalizing of transmission channel effects on a digital speech signal
02/02/1999US5867813 Method and apparatus for automatically and reproducibly rating the transmission quality of a speech transmission system
01/1999
01/26/1999US5864795 System and method for error correction in a correlation-based pitch estimator
01/26/1999US5864792 Speed-variable speech signal reproduction apparatus and method
01/21/1999WO1999003095A1 Transmitter with an improved harmonic speech encoder
01/20/1999EP0891617A1 Signal coding and decoding system, particularly for a digital audio signal
01/14/1999WO1999001863A1 Method and apparatus for speech enhancement in a speech communication system
01/02/1999CA2235455A1 Method and apparatus for speech enhancement in a speech communication system
12/1998
12/23/1998WO1998058448A1 Method and apparatus for low complexity noise reduction
12/22/1998US5852799 Pitch determination using low time resolution input signals
12/17/1998DE19724437A1 Speech signal segmentation method
12/09/1998EP0882288A1 Signal processing arrangements
12/09/1998EP0882287A1 System and method for error correction in a correlation-based pitch estimator
12/09/1998CN1201547A System for adaptively filtering audio signals to enhance speech intelligibility in noisy environmental conditions
12/08/1998US5848388 Speech recognition with sequence parsing, rejection and pause detection options
12/08/1998US5848384 Analysis of audio quality using speech recognition and synthesis
12/02/1998EP0881783A1 Method for selecting an optimal transmission channel
12/02/1998EP0801787A4 Method for forming a cohort for use in identification of an individual
11/1998
11/19/1998WO1998035340A3 Voice conversion system and methodology
11/18/1998CN1199488A Pattern recognition
11/05/1998WO1998049673A1 Method and device for detecting voice sections, and speech velocity conversion method and device utilizing said method and device
10/1998
10/29/1998WO1998048407A2 Speech detection in a telecommunication system
10/29/1998CA2286770A1 Speech detection in a telecommunication system
10/28/1998EP0874352A2 Voice activity detection
10/28/1998EP0815707B1 Signal quality determining device and method
10/20/1998US5826231 Method and device for vocal synthesis at variable speed
10/20/1998US5826224 Method of storing reflection coeffients in a vector quantizer for a speech coder to provide reduced storage requirements
10/14/1998EP0871158A2 System for speech coding using a multipulse excitation
10/14/1998EP0647375B1 Method and apparatus for objective speech quality measurements of telecommunication equipment
10/08/1998WO1998035448A3 Communication network for transmitting speech signals
10/06/1998US5819218 Voice encoder with a function of updating a background noise
10/06/1998US5819209 Pitch period extracting apparatus of speech signal
09/1998
09/30/1998EP0815705B1 Signal quality determining device and method
09/22/1998US5812966 Pitch searching time reducing method for code excited linear prediction vocoder using line spectral pair
09/15/1998US5809453 Methods and apparatus for detecting harmonic structure in a waveform
09/15/1998CA2110090C Voice encoder
09/11/1998WO1998039768A1 A high resolution post processing method for a speech decoder
09/11/1998CA2282693A1 A high resolution post processing method for a speech decoder
09/02/1998CN1192309A Assessment of signal quality
08/1998
08/25/1998US5799133 Training process
08/13/1998WO1998035448A2 Communication network for transmitting speech signals
08/13/1998WO1998035340A2 Voice conversion system and methodology
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