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1. 发明公开

EP4456064A1 AUDIO DATA PROCESSING METHOD AND APPARATUS, DEVICE, STORAGE MEDIUM, AND PROGRAM PRODUCT 失效
公开(公告)号：EP4456064A1
公开(公告)日：2024-10-30
申请号：EP23864485.0
申请日：2023-07-24
申请人： TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
发明人： HUANG, Daiyu , BAO, Feng , LI, Yuepeng
IPC分类号： G10L21/0208
CPC分类号： H04N7/15 , G10L25/30 , G10L25/24 , G10L21/0208 , G10L21/0232 , G10L21/0264 , G10L25/21 , G10L25/18
摘要： An audio data processing method and apparatus, a device, a storage medium, and a program product. The method comprises: acquiring a target audio data frame and K historical audio data frames associated with raw audio data (S101); on the basis of acquired N target cepstral coefficients of the target audio data frame, acquiring M first-order time derivatives and M second-order time derivatives (S102); acquiring N historical cepstral coefficients corresponding to each historical audio data frame, and on the basis of the acquired K*N historical cepstral coefficients, determining spectral dynamic features (S103); and inputting the N target cepstral coefficients, the M first-order time derivatives, the M second-order time derivatives and the spectral dynamic features into a target mask estimation model to obtain a target mask corresponding to the target audio data frame(S104), wherein the target mask is used for suppressing noise data in the raw audio data to obtain enhanced audio data corresponding to the raw audio data.

2. 发明公开

EP4336502A3 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：EP4336502A3
公开(公告)日：2024-06-12
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： G10L19/02 , G10L19/032 , G10L25/18
CPC分类号： G10L19/02 , G10L19/032 , 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.

3. 发明公开

EP4336503A3 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：EP4336503A3
公开(公告)日：2024-06-05
申请号：EP23218364.0
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： G10L19/02 , G10L19/032 , G10L25/18
CPC分类号： G10L19/02 , G10L19/032 , 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.

4. 发明授权

EP3992964B1 VOICE SIGNAL PROCESSING METHOD AND APPARATUS, AND ELECTRONIC DEVICE AND STORAGE MEDIUM 有权转让
公开(公告)号：EP3992964B1
公开(公告)日：2024-04-17
申请号：EP20915502.7
申请日：2020-06-22
IPC分类号： G10L21/0316 , G10L19/26 , G10L19/02 , G10L19/07 , G10L25/18
CPC分类号： G10L19/26 , G10L21/0316 , G10L19/07 , G10L25/18

5. 发明公开

EP3389047A1 LINEAR PREDICTION ANALYSIS DEVICE, METHOD, PROGRAM, AND STORAGE MEDIUM 有权
公开(公告)号：EP3389047A1
公开(公告)日：2018-10-17
申请号：EP18173641.4
申请日：2014-07-16
申请人： Nippon Telegraph and Telephone Corporation
发明人： KAMAMOTO, Yutaka , MORIYA, Takehiro , HARADA, Noboru
IPC分类号： G10L19/06 , G10L25/12
CPC分类号： G10L19/06 , G10L19/0212 , G10L19/032 , G10L21/04 , G10L25/06 , G10L25/12 , G10L25/18 , G10L25/27
摘要： An autocorrelation calculation unit 21 calculates an autocorrelation R O (i) from an input signal. A prediction coefficient calculation unit 23 performs linear prediction analysis by using a modified autocorrelation R' O (i) obtained by multiplying a coefficient w O (i) by the autocorrelation R O (i). It is assumed here, for each order i of some orders i at least, that the coefficient w O (i) corresponding to the order i is in a monotonically increasing relationship with an increase in a value that is negatively correlated with a fundamental frequency of the input signal of the current frame or a past frame.

6. 发明公开

EP3355302A1 AUDIO RECOGNITION METHOD AND SYSTEM 有权转让
公开(公告)号：EP3355302A1
公开(公告)日：2018-08-01
申请号：EP16848057.2
申请日：2016-09-14
申请人： Alibaba Group Holding Limited
发明人： DU, Zhijun
IPC分类号： G10L15/02 , G10L25/18 , G10L25/54
CPC分类号： G10L25/54 , G10L15/02 , G10L25/18 , G10L25/21
摘要： Audio recognition methods and systems are disclosed. An audio recognition method comprises: performing diffusion processing on a plurality of first feature points in a spectrogram of a to-be-recognized audio file to obtain a feature point map (S110); searching in a spectrogram of a target audio file to determine whether second feature points that respectively correspond to the diffused first feature points in the feature point map (S120) exist; and if yes, determining that the spectrogram of the to-be-recognized audio file is a part of the target audio file (S130). The method can improve the matching success rate of feature points in audio recognition.

7. 发明公开

EP3349481A1 VERFAHREN ZUR FREQUENZVERZERRUNG EINES AUDIOSIGNALS 无效
公开(公告)号：EP3349481A1
公开(公告)日：2018-07-18
申请号：EP17204648.4
申请日：2017-11-30
申请人： Sivantos Pte. Ltd.
发明人： ROSENKRANZ, Tobias Daniel , WURZBACHER, Tobias , OREINOS, Christos
IPC分类号： H04R25/00 , H04R3/02
CPC分类号： H04R25/453 , G10L25/18 , H04R3/02 , H04R25/353
摘要： Die Erfindung nennt ein Verfahren (1) zur Frequenzverzerrung (20) eines Audiosignals (18), wobei das Audiosignal (18) bei wenigstens einer Teilungsfrequenz (tf) in einen Niederfrequenz-Anteil (NF) und einen Hochfrequenz-Anteil (HF) aufgeteilt wird, wobei durch eine für den Hochfrequenz-Anteil (HF) und für den Niederfrequenz-Anteil (NF) jeweils unterschiedliche Verzerrung (S5) von Frequenzen ein frequenzverzerrtes Signal (21) erzeugt wird, und wobei die Teilungsfrequenz (tf) derart ausgewählt wird, dass sie zwischen zwei benachbarten Tönen (d 3 , dis 3 ) eines vorgegebenen Tonsystems (T) liegt.

8. 发明公开

EP3343560A1 AUDIO CODING DEVICE AND AUDIO CODING METHOD 有权
公开(公告)号：EP3343560A1
公开(公告)日：2018-07-04
申请号：EP17201820.2
申请日：2017-11-15
申请人： FUJITSU LIMITED
发明人： Kamano, Akira , Kishi, Yohei , Suzuki, Masanao
IPC分类号： G10L21/0216 , G10L19/24 , G10L19/02 , G10L21/038
CPC分类号： G10L19/0208 , G10L19/0204 , G10L19/24 , G10L19/26 , G10L21/0216 , G10L21/038 , G10L25/18
摘要： An audio coding device includes a filter configured to extract a low-band signal having a first frequency component from an input signal, a memory, and a processor coupled to the memory and configured to extract envelope information relating to an envelope of a high-band signal having a second frequency component which is higher than the first frequency component in the input signal, detect tone information that is information on a tone signal included in a high-band signal spectrum from the input signal, correct the envelope information based on a difference between frequency of the tone signal and frequency of a peak of the envelope, and code the low-band signal, the tone information, and the envelope information that is corrected.

9. 发明授权

EP3107094B1 COMPRESSION OF DECOMPOSED REPRESENTATIONS OF A SOUND FIELD 有权
公开(公告)号：EP3107094B1
公开(公告)日：2018-07-04
申请号：EP16183135.9
申请日：2014-05-29
申请人： Qualcomm Incorporated
发明人： PETERS, Nils Gunther , SEN, Dipanjan
IPC分类号： G10L19/008 , G06F17/16 , H04S7/00
CPC分类号： H04S5/005 , G06F17/16 , G10L19/002 , G10L19/008 , G10L19/0204 , G10L19/038 , G10L19/06 , G10L19/167 , G10L19/20 , G10L25/18 , G10L2019/0001 , G10L2019/0005 , H04R2205/021 , H04S7/30 , H04S7/304 , H04S7/40 , H04S2400/01 , H04S2400/15 , H04S2420/01 , H04S2420/03 , H04S2420/11
摘要： In general, techniques are described for obtaining decomposed versions of spherical harmonic coefficients. In accordance with these techniques, a device comprising one or more processors may be configured to determine a first non-zero set of coefficients of a vector that represent a distinct component of a sound field, the vector having been decomposed from a plurality of spherical harmonic coefficients that describe the sound field.

10. 发明公开

EP3309777A1 DEVICE AND METHOD FOR AUDIO FRAME PROCESSING 审中-公开
标题翻译：用于音频帧处理的装置和方法
公开(公告)号：EP3309777A1
公开(公告)日：2018-04-18
申请号：EP16306350.6
申请日：2016-10-13
申请人： Thomson Licensing
发明人： GILBERTON, Philippe , KITIC, Srdan
IPC分类号： G10L15/02 , G10L25/03 , G06F17/30
CPC分类号： G10L15/02 , G06F17/30743 , G10L19/02 , G10L25/03 , G10L25/18 , G10L25/45 , G10L25/93 , G10L2025/937
摘要： A device (200) and method for calculating scattering features for audio signal recognition. An interface (240) receives an audio signal that is processed (S610) by a processor (210) to obtain an audio frame. The processor (210) calculates (S620) a first order scattering features from at least one audio frame and then calculates (S630) for the first order scattering features an estimation of whether the first order scattering features comprises sufficient information for accurate audio signal recognition. The processor (240) calculates (S650) a second order scattering features from the first order scattering features only in case the first order scattering features does not comprise sufficient information for accurate audio signal recognition. As second order features are calculated only when it is deemed necessary, less processing power can be used by the device, which can lead to less power used by the device.
摘要翻译：一种用于计算音频信号识别的散射特征的设备（200）和方法。接口（240）接收由处理器（210）处理（S610）的音频信号以获得音频帧。处理器（210）从至少一个音频帧计算（S620）一阶散射特征，然后针对一阶散射特征计算（S630）对一阶散射特征是否包括用于精确音频信号识别的足够信息的估计。仅当第一阶散射特征不包含用于精确音频信号识别的足够信息时，处理器（240）才从第一阶散射特征计算（S650）第二阶散射特征。由于二阶特征仅在必要时才被计算，所以设备可以使用较少的处理能力，这可以导致设备使用较少的功率。

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