IPC-Stelle: G10L 19/12 [Version 2006.01]

SymbolTypTitel
GSKSECTION G — PHYSICS
G10KLMUSICAL INSTRUMENTS; ACOUSTICS
G10LUKLSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION (sound input/output for computers G06F 3/16; digital data processing methods or equipment specially adapted for handling natural language data G06F 17/20; teaching or communicating with the blind, deaf or mute G09B 21/00; telephonic communication H04M) [4]
G10L 11/00HGRDetermination or detection of speech characteristics not restricted to a single one of groups G10L 15/00-G10L 21/00 [7]
G10L 11/02UGR1
.Detection of presence or absence of speech signals (switching of direction of transmission by voice frequency in two-way loud-speaking telephone systems H04M 9/10) [7]
G10L 11/04UGR1
.Pitch determination of speech signals [7]
G10L 11/06UGR1
.Discriminating between voiced and unvoiced parts of speech signals (G10L 11/04 takes precedence) [7]
G10L 13/00HGRSpeech synthesis; Text to speech systems (electrophonic musical instruments G10H) [7]
G10L 13/02UGR1
.Methods for producing synthetic speech; Speech synthesisers [7]
G10L 13/04UGR2
. .Details of speech synthesis systems, e.g. synthesiser structure, memory management [7]
G10L 13/06UGR1
.Elementary speech units used in speech synthesisers; Concatenation rules [7]
G10L 13/08UGR1
.Text analysis or generation of parameters for speech synthesis out of text, e.g. grapheme to phoneme translation, prosody generation, stress or intonation determination [7]
G10L 15/00HGRSpeech recognition (G10L 17/00 takes precedence) [7]
G10L 15/02UGR1
.Feature extraction for speech recognition; Selection of recognition unit [7]
G10L 15/04UGR1
.Segmentation or word limit detection [7]
G10L 15/06UGR1
.Creation of reference templates; Training of speech recognition systems, e.g. adaptation to the characteristics of the speaker's voice (G10L 15/14 takes precedence) [7]
G10L 15/08UGR1
.Speech classification or search (pattern recognition G06K 9/00) [7]
G10L 15/10UGR2
. .using distance or distortion measures between unknown speech and reference templates [7]
G10L 15/12UGR2
. .using dynamic programming techniques, e.g. Dynamic Time Warping (DTW) [7]
G10L 15/14UGR2
. .using statistical models, e.g. Hidden Markov Models (HMM) (G10L 15/18 takes precedence) [7]
G10L 15/16UGR2
. .using artificial neural networks [7]
G10L 15/18UGR2
. .using natural language modelling [7]
G10L 15/20UGR1
.Speech recognition techniques specially adapted for robustness in adverse environments, e.g. in noise, of stress induced speech (G10L 21/02 takes precedence) [7]
G10L 15/22UGR1
.Procedures used during a speech recognition process, e.g. man-machine dialog [7]
G10L 15/24UGR1
.Speech recognition using non-acoustical features, e.g. position of the lips [7]
G10L 15/26UGR1
.Speech to text systems (G10L 15/08 takes precedence) [7]
G10L 15/28UGR1
.Constructional details of speech recognition systems [7]
G10L 17/00HGRSpeaker identification or verification [7]
G10L 19/00HGRSpeech analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech [7]
G10L 19/02UGR1
.using spectral analysis, e.g. transform vocoders, subband vocoders [7]
G10L 19/04UGR1
.using predictive techniques [7]
G10L 19/06UGR2
. .Determination or coding of the spectral characteristics, e.g. of the short term prediction coefficients [7]
G10L 19/08UGR2
. .Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters [7]
G10L 19/10UGR3
. . .Determination or coding of a multipulse excitation [7]
G10L 19/12UGR3
. . .Determination or coding of a code excitation, e.g. in code excited linear prediction (CELP) vocoders [7]
G10L 19/14UGR2
. .Details not provided for in groups G10L 19/06-G10L 19/12, e.g. gain coding, post filtering design, vocoder structure [7]
G10L 21/00HGRProcessing of the speech signal to produce another audible or non-audible signal, e.g. visual, tactile, in order to modify its quality or its intelligibility (G10L 19/00 takes precedence) [7]
G10L 21/02UGR1
.Speech enhancement, e.g. noise reduction, echo cancellation (echo suppression in hand-free telephones H04M 9/08; hearing aids H04R 25/00) [7]
G10L 21/04UGR1
.Time compression or expansion [7]
G10L 21/06UGR1
.Transformation of speech into a non-audible representation, e.g. speech visualisation, speech processing for tactile aids (G10L 15/26 takes precedence) [7]