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1. WO2014118159 - APPARATUS AND METHOD FOR GENERATING A FREQUENCY ENHANCED SIGNAL USING SHAPING OF THE ENHANCEMENT SIGNAL

Publication Number WO/2014/118159
Publication Date 07.08.2014
International Application No. PCT/EP2014/051599
International Filing Date 28.01.2014
Chapter 2 Demand Filed 28.11.2014
IPC
G10L 21/038 2013.1
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
21Processing 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
02Speech enhancement, e.g. noise reduction or echo cancellation
038using band spreading techniques
CPC
G10L 19/0204
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
02using spectral analysis, e.g. transform vocoders or subband vocoders
0204using subband decomposition
G10L 19/032
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
02using spectral analysis, e.g. transform vocoders or subband vocoders
032Quantisation or dequantisation of spectral components
G10L 19/06
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
04using predictive techniques
06Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
G10L 19/12
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
04using predictive techniques
08Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
12the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
G10L 2019/0012
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
0001Codebooks
0012Smoothing of parameters of the decoder interpolation
G10L 2019/0016
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
0001Codebooks
0016Codebook for LPC parameters
Applicants
  • FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. [DE]/[DE]
Inventors
  • DISCH, Sascha
  • GEIGER, Ralf
  • HELMRICH, Christian
  • MULTRUS, Markus
  • SCHMIDT, Konstantin
Agents
  • ZINKLER, Franz
Priority Data
61/758,09029.01.2013US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) APPARATUS AND METHOD FOR GENERATING A FREQUENCY ENHANCED SIGNAL USING SHAPING OF THE ENHANCEMENT SIGNAL
(FR) APPAREIL ET PROCÉDÉ POUR GÉNÉRER UN SIGNAL AMÉLIORÉ EN FRÉQUENCE À L'AIDE D'UNE MISE EN FORME DU SIGNAL D'AMÉLIORATION
Abstract
(EN) An apparatus for generating a frequency enhancement signal (140) comprises: a calculator (500) for calculating a value describing an energy distribution with respect to frequency in a core signal (110, 120); and a signal generator (200) for generating an enhancement signal (130) comprising an enhancement frequency range not included in the core signal, from the core signal (502), wherein the signal generator (200) is configured for shaping the enhancement signal or the core signal so that a spectral envelope of the enhancement signal or of the core signal depends on the value (501) describing the energy distribution with respect to frequency in the core signal.
(FR) L'invention porte sur un appareil pour générer un signal amélioré en fréquence (140) qui comprend : un calculateur (500) pour calculer une valeur décrivant une distribution d'énergie en fonction de la fréquence dans un signal de base (110, 120); et un générateur de signal (200) pour générer un signal d'amélioration (130) comprenant une plage de fréquence d'amélioration non incluse dans le signal de base, à partir du signal de base (502), le générateur de signal (200) étant configuré pour mettre en forme le signal d'amélioration ou le signal de base de manière qu'une enveloppe spectrale du signal d'amélioration ou du signal de base dépende de la valeur (501) décrivant la distribution d'énergie en fonction de la fréquence dans le signal de base.
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