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)
02/2001
02/15/2001WO2001011605A1 Method and device for detecting voice activity
02/14/2001EP1076297A1 Method for fast Fourier transformation of audio signals
02/14/2001EP1076295A1 Method and encoder for bit-rate saving encoding of audio signals
02/13/2001US6188979 Method and apparatus for estimating the fundamental frequency of a signal
02/08/2001DE19715126C2 Sprachsignal-Codiervorrichtung A speech signal encoder device
02/07/2001EP1046154A4 A vocoder-based voice recognizer
01/2001
01/30/2001US6182035 Method and apparatus for detecting voice activity
01/16/2001US6175818 Signal verification using signal processing arrangement for time varying band limited input signal
01/16/2001CA2162407C A robust pitch estimation method and device for telephone speech
01/11/2001WO2001003121A1 Encoding and decoding with harmonic components and minimum phase
01/10/2001EP1066623A1 A process and system for objective audio quality measurement
01/04/2001WO2001001705A1 Method for evaluating the quality of audio-visual sequences
01/03/2001EP1065655A1 High efficiency encoding method
01/03/2001EP1065654A1 High efficiency encoding method
01/02/2001CA2154911C Speech coding device
12/2000
12/28/2000DE19907900A1 Determining signal-to-noise ratios of distorted speech signals involves determining probability of characteristic speech signal component with characteristic speech signal parameter(s)
12/27/2000EP1062659A1 Method and device for processing a sound signal
12/27/2000EP1062658A1 A signal processing method to analyse transients of speech signals
12/26/2000US6167373 Linear prediction coefficient analyzing apparatus for the auto-correlation function of a digital speech signal
12/20/2000EP1061505A1 High efficiency encoding method
12/20/2000EP1061504A1 High efficiency encoding method
12/20/2000EP1061502A1 A pitch extraction method
12/19/2000US6163765 Subband normalization, transformation, and voiceness to recognize phonemes for text messaging in a radio communication system
12/13/2000EP1059627A1 Voice analysis-synthesis method
12/13/2000CN1276896A Method for suppressing noise in digital speech signal
12/07/2000WO2000074039A1 Audio signal transmission system
12/07/2000WO2000045379A3 Enhancing perceptual performance of sbr and related hfr coding methods by adaptive noise-floor addition and noise substitution limiting
12/05/2000US6157909 Process and device for blind equalization of the effects of a transmission channel on a digital speech signal
11/2000
11/30/2000WO2000072453A1 Universal quality measurement system for multimedia and other signals
11/30/2000WO2000072310A1 Audio signal time scale modification
11/30/2000WO2000072308A1 Interval normalization device for voice recognition input voice
11/30/2000WO2000072306A1 Real-time quality analyzer for voice and audio signals
11/29/2000EP1055289A1 A neural network based method for exponent coding in a transform coder for high quality audio
11/23/2000WO2000070602A1 Method of evaluating the rhythmicity of a digital signal composed of samples
11/22/2000CN1274456A Vocoder
11/16/2000WO2000045378A3 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
11/15/2000EP1052623A2 High efficiency encoding method
11/15/2000CN1273662A Vocoder-based voice recognizer
11/14/2000US6147973 Signal discrimination apparatus, a method for discriminating a signal, and a signal transmitting apparatus for voiceband signals
11/08/2000CN1272800A 交互式玩具 Interactive toys
11/07/2000CA2209417C Method and apparatus for signal analysis
11/02/2000EP1048025A1 Method for instrumental voice quality evaluation
10/2000
10/25/2000EP1046155A1 Signal processing
10/25/2000EP1046154A1 A vocoder-based voice recognizer
10/25/2000EP0767950B1 Method and device for adapting a speech recognition equipment for dialectal variations in a language
10/24/2000US6138093 High resolution post processing method for a speech decoder
10/24/2000US6138051 Method and apparatus for evaluating an audio decoder
10/19/2000WO2000038176A3 Method and arrangement for finding an optimal reconstruction point
10/04/2000EP1041819A1 Playback control, authentication and decoding for datastreams including object streams
10/04/2000CN1268843A Device and method of of information processing
10/03/2000CA2196554C Test method
09/2000
09/28/2000WO2000042600A3 Method in speech recognition and a speech recognition device
09/20/2000EP1037197A2 Voicing analysis in a linear predictive speech coder
09/12/2000US6119083 Training process for the classification of a perceptual signal
09/12/2000US6119081 Pitch estimation method for a low delay multiband excitation vocoder allowing the removal of pitch error without using a pitch tracking method
09/08/2000WO2000052441A1 Method and apparatus for determining the perceptual quality of speech in a communications network
09/06/2000EP1032933A1 Speech coding method and terminals for implementing said method
09/05/2000CA2158849C Speech recognition with pause detection
08/2000
08/31/2000WO2000051104A1 Method of determining the voicing probability of speech signals
08/30/2000CN1265217A Method and appts. for speech enhancement in speech communication system
08/24/2000WO2000049602A1 System, method and apparatus for cancelling noise
08/24/2000CA2358710A1 System, method and apparatus for cancelling noise
08/10/2000WO2000046789A1 Sound presence detector and sound presence/absence detecting method
08/09/2000CN1262577A Method for transmitting data in radio speech channel
08/08/2000US6101463 Method for compressing a speech signal by using similarity of the F1 /F0 ratios in pitch intervals within a frame
08/08/2000US6101462 Signal processing arrangement for time varying band-limited signals using TESPAR Symbols
08/03/2000WO2000045379A2 Enhancing perceptual performance of sbr and related hfr coding methods by adaptive noise-floor addition and noise substitution limiting
08/03/2000WO2000045378A2 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
07/2000
07/27/2000WO2000025230A3 Determining a tangent space and filtering data onto a manifold
07/26/2000EP1021805A1 Method for conditioning a digital speech signal
07/25/2000US6094628 Method and apparatus for transmitting user-customized high-quality, low-bit-rate speech
07/20/2000WO2000042600A2 Method in speech recognition and a speech recognition device
07/19/2000EP1020848A2 Method for transmitting auxiliary information in a vocoder stream
07/19/2000EP0901678B1 Signal processing arrangements
07/11/2000CA2293165A1 Method for transmitting data in wireless speech channels
07/05/2000EP1016073A1 Method for suppressing noise in a digital speech signal
07/05/2000EP1016071A1 Method for detecting speech activity
06/2000
06/29/2000WO2000038176A2 Method and arrangement for finding an optimal reconstruction point
06/29/2000WO2000038174A1 Method and apparatus for decreasing storage requirements for a voice recording system
06/29/2000CA2356152A1 Method and arrangement for finding an optimal reconstruction point
06/20/2000US6078884 Pattern recognition
06/20/2000US6078880 Speech coding system and method including voicing cut off frequency analyzer
06/20/2000US6078879 Transmitter with an improved harmonic speech encoder
06/15/2000DE19854420A1 Sound signal processing method especially for telecommunication system
06/13/2000US6076058 Linear trajectory models incorporating preprocessing parameters for speech recognition
06/08/2000DE19854341A1 Verfahren und Schaltungsanordnung zur Sprachpegelmessung in einem Sprachsignalverarbeitungssystem Method and circuit arrangement for speech level measurement in a speech signal processing system
05/2000
05/31/2000EP1005016A2 Method and circuit arrangement for measuring speech level in a speech processing system
05/31/2000EP0970466A4 Voice conversion system and methodology
05/31/2000EP0815706B1 Signal quality determining device and method
05/31/2000EP0776567B1 Analysis of audio quality
05/30/2000US6070135 Method and apparatus for discriminating non-sounds and voiceless sounds of speech signals from each other
05/30/2000CA2184949C Secure spread spectrum watermarking for multimedia data
05/24/2000EP1002312A1 Transmitter with an improved harmonic speech encoder
05/24/2000CN1254433A A high resolution post processing method for speech decoder
05/23/2000US6067518 Linear prediction speech coding apparatus
05/23/2000CA2137005C Method and apparatus for objective speech quality measurements of telecommunication equipment
05/16/2000US6064966 Signal quality determining device and method
05/16/2000US6064962 Formant emphasis method and formant emphasis filter device
05/16/2000US6064946 Signal quality determining device and method
05/16/2000CA2169745C Voice activity detector
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