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1. 发明公开

EP4441736A1 A MULTI-MODAL COGNITIVE MECHANISM FOR ROAD SECTION RECOGNITION 审中-实审
公开(公告)号：EP4441736A1
公开(公告)日：2024-10-09
申请号：EP22829846.9
申请日：2022-11-25
申请人： International Business Machines Corporation
发明人： ZHAO, Si Tong , XU, Jing Wen , YUAN, Zhong Fang , LI, Ya Dong , ZOU, Hai Bo , XIA, Xuan Yin
IPC分类号： G10L25/51 , G10L25/18 , G10L25/30 , G01M17/00
CPC分类号： G10L25/51 , G10L25/18 , G10L25/30 , G01M17/007

2. 发明公开

EP4435779A3 IMPROVED SUBBAND BLOCK BASED HARMONIC TRANSPOSITION 审中-实审
公开(公告)号：EP4435779A3
公开(公告)日：2024-10-09
申请号：EP24193627.7
申请日：2011-01-05
申请人： Dolby International AB
发明人： VILLEMOES, Lars
IPC分类号： G10L21/04 , G10L19/022 , G10L25/18 , G10L21/038 , G10L19/02
CPC分类号： G10L19/0204 , G10L19/022 , G10L21/04 , G10L21/038 , G10L25/18
摘要： The present document relates to audio source coding systems which make use of a harmonic transposition method for high frequency reconstruction (HFR), as well as to digital effect processors, e.g. exciters, where generation of harmonic distortion add brightness to the processed signal, and to time stretchers where a signal duration is prolonged with maintained spectral content. A system and method configured to generate a time stretched and/or frequency transposed signal from an input signal is described. The system comprises an analysis filterbank (101) configured to provide an analysis subband signal from the input signal; wherein the analysis subband signal comprises a plurality of complex valued analysis samples, each having a phase and a magnitude. Furthermore, the system comprises a subband processing unit (102) configured to determine a synthesis subband signal from the analysis subband signal using a subband transposition factor Q and a subband stretch factor S. The subband processing unit (102) performs a block based nonlinear processing wherein the magnitude of samples of the synthesis subband signal are determined from the magnitude of corresponding samples of the analysis subband signal and a predetermined sample of the analysis subband signal. In addition, the system comprises a synthesis filterbank (103) configured to generate the time stretched and/or frequency transposed signal from the synthesis subband signal.

3. 发明授权

EP3616199B1 VARIABLE ALPHABET SIZE IN DIGITAL AUDIO SIGNALS 有权
公开(公告)号：EP3616199B1
公开(公告)日：2024-08-28
申请号：EP18790005.5
申请日：2018-04-24
IPC分类号： G10L19/24 , G10L19/022 , G10L25/18
CPC分类号： G10L25/18 , G10L19/022

4. 发明公开

EP4372748A3 METHODS AND APPARATUS TO FINGERPRINT AN AUDIO SIGNAL VIA NORMALIZATION 审中-实审
公开(公告)号：EP4372748A3
公开(公告)日：2024-08-14
申请号：EP24167083.5
申请日：2019-09-06
申请人： Gracenote, Inc.
发明人： COOVER, Robert , RAFII, Zafar
IPC分类号： G10L25/51 , G10L25/18 , G10L25/21 , G10L25/54
CPC分类号： G10L25/18 , G10L25/21 , G10L25/51 , G10L25/54
摘要： Methods, apparatus, systems, and articles of manufacture are disclosed to fingerprint audio via mean normalization. An example apparatus for audio fingerprinting includes a frequency range separator to transform an audio signal into a frequency domain, the transformed audio signal including a plurality of time-frequency bins including a first time-frequency bin, an audio characteristic determiner to determine a first characteristic of a first group of time-frequency bins of the plurality of time-frequency bins, the first group of time-frequency bins surrounding the first time-frequency bin and a signal normalizer to normalize the audio signal to thereby generate normalized energy values, the normalizing of the audio signal including normalizing the first time-frequency bin by the first characteristic. The example apparatus further includes a point selector to select one of the normalized energy values and a fingerprint generator to generate a fingerprint of the audio signal using the selected one of the normalized energy values.

5. 发明授权

EP3669356B1 LOW COMPLEXITY DETECTION OF VOICED SPEECH AND PITCH ESTIMATION 有权转让
公开(公告)号：EP3669356B1
公开(公告)日：2024-07-03
申请号：EP17758729.2
申请日：2017-08-17
IPC分类号： G10L21/02 , G10L25/93 , G10L25/18
CPC分类号： G10L21/02 , G10L25/93 , G10L25/18

6. 发明授权

EP3926623B1 SPEECH RECOGNITION METHOD AND APPARATUS, AND NEURAL NETWORK TRAINING METHOD AND APPARATUS 有权转让
公开(公告)号：EP3926623B1
公开(公告)日：2024-05-15
申请号：EP20860648.3
申请日：2020-08-24
IPC分类号： G10L15/16 , G10L15/06 , G06N3/044 , G06N3/084 , G06N3/045 , G10L25/18 , G06N3/048 , G10L15/02
CPC分类号： G10L15/16 , G10L15/063 , G10L2015/02520130101 , G10L25/18 , G06N3/084 , G06N3/048 , G06N3/044 , G06N3/045

7. 发明授权

EP3998607B1 SPEECH DECODER 有权
公开(公告)号：EP3998607B1
公开(公告)日：2024-03-27
申请号：EP21217818.0
申请日：2012-02-16
发明人： KIKUIRI, Kei , YAMAGUCHI, Atsushi
IPC分类号： G10L21/0388 , G10L19/02 , G10L25/18 , G10L25/21

8. 发明公开

EP4336502A2 AUDIO ENCODERS, AUDIO DECODERS, METHODS AND COMPUTER PROGRAMS ADAPTING AN ENCODING AND DECODING OF LEAST SIGNIFICANT BITS 审中-实审
公开(公告)号：EP4336502A2
公开(公告)日：2024-03-13
申请号：EP23218359.0
申请日：2018-11-08
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： RAVELLI, Emmanuel , FUCHS, Guillaume , SCHNELL, Markus , TOMASEK, Adrian , GEYERSBERGER, Stefan
IPC分类号： G10L25/18
摘要： An audio decoder for providing a decoded audio information on the basis of an encoded audio information is configured to obtain decoded spectral values on the basis of an encoded information representing the spectral values. The audio decoder is configured to jointly decode two or more most significant bits per spectral value on the basis of respective symbol codes for a set of spectral values using an arithmetic decoding, wherein a respective symbol code represents two or more most significant bits per spectral value for one or more spectral values.The audio decoder is configured to decode one or more least significant bits associated with one or more of the spectral values in dependence on how much least significant bit information is available, such that one or more least significant bits associated with one or more of the spectral values are decoded, while no least significant bits are decoded for one or more other spectral values for which one or more most significant bits are decoded and which comprise more bits than the one or more most significant bits. The audio decoder is configured to provide the decoded audio information using the spectral values. Modifications of the audio decoder are possible. An audio encoder is also described.

9. 发明公开

EP4327324A1 COLORLESS GENERATION OF ELEVATION PERCEPTUAL CUES USING ALL-PASS FILTER NETWORKS 审中-实审
公开(公告)号：EP4327324A1
公开(公告)日：2024-02-28
申请号：EP22838430.1
申请日：2022-07-07
申请人： Boomcloud 360, Inc.
发明人： MARIGLIO, Joseph, Anthony, III , SELDESS, Zachary
IPC分类号： G10L19/008 , G10L19/26 , G10L25/18 , H04S7/00

10. 发明公开

EP4270393A3 AUDIO SIMILARITY EVALUATOR, AUDIO ENCODER, METHODS AND COMPUTER PROGRAM 审中-实审
公开(公告)号：EP4270393A3
公开(公告)日：2023-12-20
申请号：EP23180176.2
申请日：2019-05-29
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Disch, Sascha , van de Par, Steven , Niedermeier, Andreas , Burdiel Pérez, Elena , EDLER, Bernd
IPC分类号： G10L25/51 , G10L19/22 , G10L21/0388 , G10L25/18
摘要： An audio similarity evaluator obtains envelope signals for a plurality of frequency ranges on the basis of an input audio signal. The audio similarity evaluator is configured to obtain a modulation information associated with the envelope signals for a plurality of modulation frequency ranges, wherein the modulation information describes the modulation of the envelope signals. The audio similarity evaluator is configured to compare the obtained modulation information with a reference modulation information associated with a reference audio signal, in order to obtain an information about a similarity between the input audio signal and the reference audio signal. An audio encoder uses such an audio similarity evaluator. Another audio similarity evaluator uses a neural net trained using the audio similarity evaluator.

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