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    AUDIO ENCODERS, AUDIO DECODERS, SYSTEMS, METHODS AND COMPUTER PROGRAMS USING AN INCREASED TEMPORAL RESOLUTION IN TEMPORAL PROXIMITY OF ONSETS OR OFFSETS OF FRICATIVES OR AFFRICATES
    4.
    发明公开
    AUDIO ENCODERS, AUDIO DECODERS, SYSTEMS, METHODS AND COMPUTER PROGRAMS USING AN INCREASED TEMPORAL RESOLUTION IN TEMPORAL PROXIMITY OF ONSETS OR OFFSETS OF FRICATIVES OR AFFRICATES 有权
    音频编码器，音频解码器系统，方法和具有增强的临时解决方案在时间接近插入计算机程序或抵消或擦音塞擦音

    公开(公告)号：EP2951815A1

    公开(公告)日：2015-12-09

    申请号：EP14702516.7

    申请日：2014-01-28

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： DISCH, Sascha ,  HELMRICH, Christian ,  MULTRUS, Markus ,  SCHNELL, Markus ,  TRITTHART, Arthur

    IPC分类号： G10L19/025 ,  G10L21/038

    CPC分类号： G10L19/00 ,  G10L19/025 ,  G10L19/24 ,  G10L21/038

    摘要： An audio encoder for providing an encoded audio information on the basis of an input audio information has a bandwidth extension information provider configured to provide bandwidth extension information using a variable temporal resolution and a detector configured to detect an onset of a fricative or affricate. The audio encoder is configured to adjust a temporal resolution used by the bandwidth extension information provider such that bandwidth extension information is provided with an increased temporal resolution at least for a predetermined period of time before a time at which an onset of a fricative or affricate is detected and for a predetermined period of time following the time at which the onset of the fricative or affricate is detected. Alternatively or in addition, the bandwidth extension information is provided with an increased temporal resolution in response to a detection of an offset of a fricative or affricate. Audio encoders and methods use a corresponding concept.

    摘要翻译： 用于输入音频信息的基础上的编码音频信息提供的音频编码器具有被配置成提供使用可变时间分辨率和被配置为在一个或擦音塞擦音的发作来检测检测器的带宽扩展信息的带宽扩展信息提供者。 音频编码器配置为调整由带宽扩展信息提供商的搜索使用的时间分辨率也带宽扩展信息以提高时间分辨率提供至少为预定时间段，在这一个时间之前发作的擦音或塞擦音是 检测并在之后被检测到擦音或塞擦音发作时的预定时间段。 可选地或此外，带宽扩展信息是在增加的时间分辨率响应于检测的一擦音或破擦音的偏移设置有。 音频编码器和方法使用相应的概念。

    AUDIO DECODER, AUDIO DECODING METHOD, AUDIO ENCODER, AUDIO ENCODING METHOD AND COMPUTER PROGRAM
    5.
    发明公开
    AUDIO DECODER, AUDIO DECODING METHOD, AUDIO ENCODER, AUDIO ENCODING METHOD AND COMPUTER PROGRAM 审中-公开

    公开(公告)号：EP4131258A1

    公开(公告)日：2023-02-08

    申请号：EP22196723.5

    申请日：2011-07-20

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： FUCHS, Guillaume ,  SUBBARAMAN, Vignesh ,  MULTRUS, Markus ,  RETTELBACH, Nikolaus ,  HILDENBRAND, Matthias ,  WEIß, Oliver ,  TRITTHART, Arthur ,  WARMBOLD, Patrick

    IPC分类号： G10L19/00 ,  G10L19/02

    摘要： An audio decoder for providing a decoded audio information on the basis of an encoded audio information comprises an arithmetic decoder for providing a plurality of decoded spectral values on the basis of an arithmetically encoded representation of the spectral values, and a frequency-domain-to-time-domain converter for providing a time-domain audio representation using the decoded spectral values, in order to obtain the decoded audio information. The arithmetic decoder is configured to select a mapping rule describing a mapping of a code value representing a spectral value, or a most significant bit-plane of a spectral value, in an encoded form, onto a symbol code representing a spectral value, or a most significant bit-plane of a spectral value, in a decoded form, in dependence on a context state described by a numeric current context value. The arithmetic decoder is configured to determine the numeric current context value in dependence on a plurality of previously decoded spectral values. The arithmetic decoder is configured to evaluate a hash table, entries of which define both significant state values amongst the numeric context values and boundaries of intervals of numeric context values, in order to select the mapping rule, wherein the hash table ari_hash_m is defined as given in Figs. 22(1), 22(2), 22(3) and 22(4). The arithmetic decoder is configured to evaluate the hash table, to determine whether the numeric current context value is identical to a table context value described by an entry of the hash table or to determine an interval described by entries of the hash table within which the numeric current context value lies, and to derive a mapping rule index value describing a selected mapping rule in dependence on a result of the evaluation.

    AUDIO ENCODERS, AUDIO DECODERS, SYSTEMS, METHODS AND COMPUTER PROGRAMS USING AN INCREASED TEMPORAL RESOLUTION IN TEMPORAL PROXIMITY OF ONSETS OR OFFSETS OF FRICATIVES OR AFFRICATES
    7.
    发明公开
    AUDIO ENCODERS, AUDIO DECODERS, SYSTEMS, METHODS AND COMPUTER PROGRAMS USING AN INCREASED TEMPORAL RESOLUTION IN TEMPORAL PROXIMITY OF ONSETS OR OFFSETS OF FRICATIVES OR AFFRICATES 审中-公开
    音频编码器，音频解码器，系统，方法和计算机程序，使用增加的时间分辨率在时间接近发射或偏移的法语或非语言

    公开(公告)号：EP3279894A1

    公开(公告)日：2018-02-07

    申请号：EP17191504.4

    申请日：2014-01-28

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： DISCH, Sascha ,  HELMRICH, Christian ,  MULTRUS, Markus ,  SCHNELL, Markus ,  TRITTHART, Arthur

    IPC分类号： G10L19/025 ,  G10L21/038

    摘要： An audio encoder for providing an encoded audio information on the basis of an input audio information comprises a bandwidth extension information provider configured to provide bandwidth extension information using a variable temporal resolution and a detector configured to detect an onset of a fricative or affricate. The audio encoder is configured to adjust a temporal resolution used by the bandwidth extension information provider such that bandwidth extension information is provided with an increased temporal resolution at least for a predetermined period of time before a time at which an onset of a fricative or affricate is detected and for a predetermined period of time following the time at which the onset of the fricative or affricate is detected. Alternatively or in addition, the bandwidth extension information is provided with an increased temporal resolution in response to a detection of an offset of a fricative or affricate. Audio encoders and methods use a corresponding concept.

    摘要翻译： 一种用于基于输入音频信息提供编码音频信息的音频编码器包括：带宽扩展信息提供器，被配置为使用可变时间分辨率提供带宽扩展信息;以及检测器，被配置为检测摩擦音或附加音的开始。 音频编码器被配置为调整由带宽扩展信息提供器使用的时间分辨率，使得带宽扩展信息被提供有增加的时间分辨率，至少持续预定时间段，之后是摩擦音或音叉的开始的时间 在检测到摩擦音或附属物起始的时间之后检测并持续预定的时间段。 备选地或附加地，响应于检测到摩擦或擦伤的偏移，带宽扩展信息被提供有增加的时间分辨率。 音频编码器和方法使用相应的概念。

    AUDIO DECODER HAVING A BANDWIDTH EXTENSION MODULE WITH AN ENERGY ADJUSTING MODULE
    10.
    发明公开
    AUDIO DECODER HAVING A BANDWIDTH EXTENSION MODULE WITH AN ENERGY ADJUSTING MODULE 审中-公开
    UL UL UL UL UL UL UL UL UL UL UL UL UL UL UL UL UL UL UL UL UL UL UL UL UL

    公开(公告)号：EP3011560A1

    公开(公告)日：2016-04-27

    申请号：EP14733125.0

    申请日：2014-06-18

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： LECOMTE, Jérémie ,  BAUER, Fabian ,  SPERSCHNEIDER, Ralph ,  TRITTHART, Arthur

    IPC分类号： G10L19/005 ,  G10L21/038 ,  G10L19/24

    CPC分类号： G10L19/005 ,  G10L19/0204 ,  G10L19/028 ,  G10L19/083 ,  G10L19/24 ,  G10L21/038

    摘要： An audio decoder configured to produce an audio signal from a bitstream containing audio frames includes: a core band decoding module configured to derive a directly decoded core band audio signal from the bitstream; a bandwidth extension module configured to derive a parametrically de-coded bandwidth extension audio signal from the core band audio signal and from the bitstream, wherein the bandwidth extension audio signal is based on a frequency domain signal having at least one frequency band; and a combiner configured to combine the core band audio signal and the bandwidth extension audio signal so as to produce the audio signal; wherein the bandwidth extension module includes an energy adjusting module being configured in such way that in a current audio frame in which an audio frame loss occurs, an adjusted signal energy for the cur-rent audio frame for the at least one frequency band is set.

    摘要翻译： 配置为从包含音频帧的比特流产生音频信号的音频解码器包括：核心频带解码模块，被配置为从比特流导出直接解码的核心频带音频信号; 带宽扩展模块，被配置为从所述核心频带音频信号和所述比特流导出参数解码的带宽扩展音频信号，其中所述带宽扩展音频信号基于具有至少一个频带的频域信号; 以及组合器，被配置为组合所述核心频带音频信号和所述带宽扩展音频信号，以便产生所述音频信号; 其中所述带宽扩展模块包括能量调整模块，其被配置为使得在发生音频帧丢失的当前音频帧中，设置用于所述至少一个频带的所述当前音频帧的经调整的信号能量。