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11. 发明申请

WO2011042464A1 MULTI-MODE AUDIO SIGNAL DECODER, MULTI-MODE AUDIO SIGNAL ENCODER, METHODS AND COMPUTER PROGRAM USING A LINEAR-PREDICTION-CODING BASED NOISE SHAPING 审中-公开
标题翻译：多模式音频信号解码器，多模式音频信号编码器，使用基于线性预测编码的噪声形状的方法和计算机程序
公开(公告)号：WO2011042464A1
公开(公告)日：2011-04-14
申请号：PCT/EP2010/064917
申请日：2010-10-06
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , NEUENDORF, Max , FUCHS, Guillaume , RETTELBACH, Nikolaus , BAECKSTROEM, Tom , LECOMTE, Jèrèmie , HERRE, Jürgen
发明人： NEUENDORF, Max , FUCHS, Guillaume , RETTELBACH, Nikolaus , BAECKSTROEM, Tom , LECOMTE, Jèrèmie , HERRE, Jürgen
IPC分类号： G10L19/02 , G10L19/14
CPC分类号： G10L19/20 , G10L19/022
摘要： A multi-mode audio signal decoder for providing a decoded representation of an audio content on the basis of an encoded representation of the audio content comprises a spectral value determinator configured to obtain sets of decoded spectral coefficients for a plurality of portions of the audio content. The audio signal decoder also comprises a spectrum processor configured to apply a spectral shaping to a set of spectral coefficients, or to a pre-processed version thereof, in dependence on a set of linear-prediction-domain parameters for a portion of the audio content encoded in a linear-prediction mode, and to apply a spectral shaping to a set of decoded spectral coefficients, or a pre-processed version thereof, in dependence on a set of scale factor parameters for a portion of the audio content encoded in a frequency-domain mode. The audio signal decoder comprises a frequency-domain-to-time-domain converter configured to obtain a time-domain representation of the audio content on the basis of a spectrally-shaped set of decoded spectral coefficients for a portion of the audio content encoded in the linear-prediction mode, and to obtain a time domain representation of the audio content on the basis of a spectrally shaped set of decoded spectral coefficients for a portion of the audio content encoded in the frequency domain mode. An audio signal encoder is also described.
摘要翻译：用于基于音频内容的编码表示提供音频内容的解码表示的多模式音频信号解码器包括：频谱值确定器，被配置为获得音频内容的多个部分的解码频谱系数集合。音频信号解码器还包括频谱处理器，其被配置为根据用于音频内容的一部分的一组线性预测域参数将频谱整形应用于一组频谱系数或其预处理版本以线性预测模式编码，并且根据用于以频率编码的音频内容的一部分的一组缩放因子参数将频谱整形应用于一组解码频谱系数或其预处理版本域名模式。音频信号解码器包括频域 - 时域转换器，其被配置为基于用于编码的音频内容的一部分的解码频谱系数的频谱形状集合来获得音频内容的时域表示线性预测模式，并且基于在频域模式中编码的音频内容的一部分的解码频谱系数的频谱整形集合来获得音频内容的时域表示。还描述了音频信号编码器。

12. 发明申请

WO2012045744A1 APPARATUS AND METHOD FOR PROCESSING AN AUDIO SIGNAL AND FOR PROVIDING A HIGHER TEMPORAL GRANULARITY FOR A COMBINED UNIFIED SPEECH AND AUDIO CODEC (USAC) 审中-公开
标题翻译：用于处理音频信号并为组合的统一语音和音频编解码器（USAC）提供较高时间格数的装置和方法
公开(公告)号：WO2012045744A1
公开(公告)日：2012-04-12
申请号：PCT/EP2011/067318
申请日：2011-10-04
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , VOICEAGE CORPORATION , MULTRUS, Markus , GRILL, Bernhard , NEUENDORF, Max , RETTELBACH, Nikolaus , FUCHS, Guillaume , GOURNAY, Philippe , LEFEBVRE, Roch , BESSETTE, Bruno
发明人： MULTRUS, Markus , GRILL, Bernhard , NEUENDORF, Max , RETTELBACH, Nikolaus , FUCHS, Guillaume , GOURNAY, Philippe , LEFEBVRE, Roch , BESSETTE, Bruno
IPC分类号： G10L19/00 , G10L19/02 , G10L21/04
CPC分类号： G10L19/12 , G10L19/0204 , G10L21/00 , G10L2019/0012
摘要： An apparatus for processing an audio signal is provided. The apparatus comprises a signal processor (110; 205; 405) and a configurator (120; 208; 408). The signal processor (110; 205; 405) is adapted to receive a first audio signal frame having a first configurable number of samples of the audio signal, Moreover, the signal processor (110; 205; 405) is adapted to upsample the audio signal by a configurable upsampling factor to obtain a processed audio signal. Furthermore, the signal processor (110; 205; 405) is adapted to output a second audio signal frame having a second configurable number of samples of the processed audio signal. The configurator 120; 208; 408) is adapted to configure the signal processor (110; 205; 405) based on configuration information such that the configurable upsampling factor is equal to a first upsampling value when a first ratio of the second configurable number of samples to the first configurable number of samples has a first ratio value. Moreover, the configurator ( 120; 208; 408) is adapted to configure the signal processor (110; 205; 405) such that the configurable upsampling factor is equal to a different second upsampling value, when a different second ratio of the second configurable number of samples to the first configurable number of samples has a different second ratio value. The first or the second ratio value is not an integer value.
摘要翻译：提供一种用于处理音频信号的装置。该装置包括信号处理器（110; 205; 405）和配置器（120; 208; 408）。信号处理器（110; 205; 405）适于接收具有音频信号的第一可配置数目的采样的第一音频信号帧。此外，信号处理器（110; 205; 405）适于对音频信号通过可配置的上采样因子来获得经处理的音频信号。此外，信号处理器（110; 205; 405）适于输出具有经处理的音频信号的第二可配置数目的样本的第二音频信号帧。配置器120; 208; 408）适于基于配置信息来配置信号处理器（110; 205; 405），使得当第二可配置数量的采样的第一比率与第一可配置数量的采样值相对应时，可配置上采样因子等于第一上采样值样品具有第一比值。此外，配置器（120; 208; 408）适于配置信号处理器（110; 205; 405），使得可配置上采样因子等于不同的第二上采样值，当第二配置数量的第一可配置数量的样本具有不同的第二比值。第一或第二比值不是整数值。

13. 发明申请

WO2010006717A1 AUDIO ENCODING/DECODING SCHEME HAVING A SWITCHABLE BYPASS 审中-公开
标题翻译：具有可切换旁路的音频编码/解码方案
公开(公告)号：WO2010006717A1
公开(公告)日：2010-01-21
申请号：PCT/EP2009/004875
申请日：2009-07-06
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , VOICEAGE CORPORATION , GRILL, Bernhard , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , SALAMI, Redwan , GOURNAY, Philippe
发明人： GRILL, Bernhard , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus , LEFEBVRE, Roch , BESSETTE, Bruno , LAPIERRE, Jimmy , SALAMI, Redwan , GOURNAY, Philippe
IPC分类号： G10L19/14
CPC分类号： G10L19/173 , G10L19/0017 , G10L19/008 , G10L19/0212 , G10L19/18 , G10L2019/0008
摘要： An apparatus for encoding comprises a first domain Converter (510), a switchable bypass (50), a second domain Converter (410), a first processor (420) and a second processor (520) to obtain an encoded audio signal having different signal portions represented by coded data in different domains, which have been coded by different coding algorithms. Corresponding decoding stages in the decoder together with a bypass for bypassing a domain Converter allow the generation of a decoded audio signal with high quality and low bit rate.
摘要翻译：一种用于编码的装置，包括第一域转换器（510），可切换旁路（50），第二域转换器（410），第一处理器（420）和第二处理器（520），以获得具有不同信号的编码音频信号由不同域中的编码数据表示的部分，其已经由不同的编码算法编码。解码器中的对应的解码级以及绕过域转换器的旁路允许产生具有高质量和低比特率的解码音频信号。

14. 发明申请

WO2010003556A1 AUDIO ENCODER, AUDIO DECODER, METHODS FOR ENCODING AND DECODING AN AUDIO SIGNAL, AUDIO STREAM AND COMPUTER PROGRAM 审中-公开
标题翻译：音频编码器，音频解码器，用于编码和解码音频信号，音频流和计算机程序的方法
公开(公告)号：WO2010003556A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004602
申请日：2009-06-25
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , RETTELBACH, Nikolaus , GRILL, Bernhard , FUCHS, Guillaume , GEYRSBERGER, Stefan , MULTRUS, Markus , POPP, Harald , HERRE, Juergen , WABNIK, Stefan , SCHULLER, Gerald , HIRSCHFELD, Jens
发明人： RETTELBACH, Nikolaus , GRILL, Bernhard , FUCHS, Guillaume , GEYRSBERGER, Stefan , MULTRUS, Markus , POPP, Harald , HERRE, Juergen , WABNIK, Stefan , SCHULLER, Gerald , HIRSCHFELD, Jens
IPC分类号： G10L19/00 , G10L19/02
CPC分类号： G10L19/035 , G10L19/008 , G10L19/02 , G10L19/0204 , G10L19/028 , G10L19/032 , G10L25/18
摘要： An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal comprises a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also comprises an audio stream provider configured to provide the audio stream such that the audio stream comprises an information describing an audio content of the frequency bands and an information describing the multi- band quantization error. A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal comprises a noise filler configured to introduce noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi- band noise intensity value.
摘要翻译：一种用于基于输入音频信号的变换域表示来提供音频流的编码器包括：量化误差计算器，被配置为确定输入音频信号的多个频带上的多频带量化误差，获取信息可用。编码器还包括配置成提供音频流的音频流提供器，使得音频流包括描述频带的音频内容的信息和描述多频带量化误差的信息。用于基于表示音频信号的频带的频带的频谱分量的编码音频流提供音频信号的解码表示的解码器包括被配置为将噪声引入多个频带的频谱分量的噪声填充单元，基于公共多频带噪声强度值来关联频带增益信息。

15. 发明申请

WO2012016839A1 AUDIO ENCODER, AUDIO DECODER, METHOD FOR ENCODING AN AUDIO INFORMATION, METHOD FOR DECODING AN AUDIO INFORMATION AND COMPUTER PROGRAM USING AN OPTIMIZED HASH TABLE 审中-公开
标题翻译：音频编码器，音频解码器，用于编码音频信息的方法，使用优化的哈希表解码音频信息和计算机程序的方法
公开(公告)号：WO2012016839A1
公开(公告)日：2012-02-09
申请号：PCT/EP2011/062478
申请日：2011-07-20
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FUCHS, Guillaume , SUBBARAMAN, Vignesh , MULTRUS, Markus , RETTELBACH, Nikolaus , HILDENBRAND, Matthias , WEISS, Oliver , TRITTHART, Arthur , WARMBOLD, Patrick
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
CPC分类号： G10L19/008 , G10L19/0017 , 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.
摘要翻译：用于根据编码音频信息提供解码音频信息的音频解码器包括：算术解码器，用于在频谱值的算术编码表示的基础上提供多个解码频谱值;以及频域 - 时域转换器，用于使用解码的频谱值提供时域音频表示，以便获得解码的音频信息。算术解码器被配置为选择描述表示编码形式的表示频谱值的频谱值或频谱值的最高有效位平面的代码值到表示频谱值的符号代码的映射规则，或者根据由数字当前上下文值描述的上下文状态，解码形式的频谱值的最高有效位平面。算术解码器被配置为根据多个先前解码的频谱值来确定数字电流上下文值。算术解码器被配置为评估散列表，其条目在数值上下文值和数字上下文值的间隔的边界之间定义重要状态值，以便选择映射规则，其中散列表ari_hash_m被定义为给定在图 22（1），22（2），22（3）和22（4）。算术解码器被配置为评估散列表，以确定数字当前上下文值是否与由哈希表的条目描述的表上下文值相同或者确定由散列表的条目描述的间隔，其中数字当前上下文值在于，并且根据评估结果导出描述所选择的映射规则的映射规则索引值。

16. 发明申请

WO2011147950A1 LOW-DELAY UNIFIED SPEECH AND AUDIO CODEC 审中-公开
标题翻译：低延迟语音和音频编解码器
公开(公告)号：WO2011147950A1
公开(公告)日：2011-12-01
申请号：PCT/EP2011/058701
申请日：2011-05-27
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , GEIGER, Ralf , SCHNELL, Markus , FUCHS, Guillaume , RAVELLI, Emmanuel , BÄCKSTRÖM, Tom , LECOMTE, Jérémie , SCHMIDT, Konstantin , RETTELBACH, Nikolaus , LUTZKY, Manfred , GRILL, Bernhard
发明人： GEIGER, Ralf , SCHNELL, Markus , FUCHS, Guillaume , RAVELLI, Emmanuel , BÄCKSTRÖM, Tom , LECOMTE, Jérémie , SCHMIDT, Konstantin , RETTELBACH, Nikolaus , LUTZKY, Manfred , GRILL, Bernhard
IPC分类号： G10L19/14
CPC分类号： G10L19/20
摘要： A unified speech and audio decoder is described, which comprises a frame buffer configured to buffer a sub-part of a datastream composed of consecutive frames in units of the frames so that the subpart continuously comprises at least one frame, each frame representing a coded version of a respective portion of consecutive portions of an audio signal, and each frame comprising a mode identifier assigning the respective frame to a respective one of a plurality of coding modes comprising a CELP (codebook excitation linear prediction) coding mode and a transform coded excitation linear prediction coding mode. Further, the unified speech and audio decoder comprises a CELP decoder configured to decode the frames to which the CELP coding mode is assigned to reconstruct the respective portions, and a transform coded excitation linear prediction decoder configured to decode the frames to which the transform coded excitation linear prediction coding mode is assigned, to reconstruct the respective portions, wherein the frame buffer is configured to distribute the frames buffered to the CELP decoder and the transform coded excitation linear prediction decoder under removal of the respective frames from the frame buffer, frame-wise.
摘要翻译：描述了一种统一的语音和音频解码器，其包括帧缓冲器，其被配置为以帧为单位缓冲由连续帧组成的数据流的子部分，使得该子部分连续地包括至少一个帧，每个帧表示编码版本音频信号的连续部分的相应部分，并且每个帧包括将各个帧分配给包括CELP（码本激励线性预测）编码模式和变换编码激励线性的多个编码模式中的相应一个的模式标识符预测编码模式。此外，统一语音和音频解码器包括：CELP解码器，被配置为对分配有CELP编码模式的帧进行解码以重构各个部分;以及变换编码激励线性预测解码器，被配置为对转换编码激励分配线性预测编码模式，以重建各个部分，其中帧缓冲器被配置为在从帧缓冲器移除相应帧的情况下，将缓冲到CELP解码器和变换编码激励线性预测解码器的帧分配。

17. 发明申请

WO2011086065A1 AUDIO ENCODER, AUDIO DECODER, METHOD FOR ENCODING AND AUDIO INFORMATION, METHOD FOR DECODING AN AUDIO INFORMATION AND COMPUTER PROGRAM USING A HASH TABLE DESCRIBING BOTH SIGNIFICANT STATE VALUES AND INTERVAL BOUNDARIES 审中-公开
标题翻译：音频编码器，音频解码器，编码和音频信息的方法，用于使用描述两个重要的状态值和间隔边界的哈希表来解码音频信息和计算机程序的方法
公开(公告)号：WO2011086065A1
公开(公告)日：2011-07-21
申请号：PCT/EP2011/050272
申请日：2011-01-11
申请人： FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FUCHS, Guillaume , MULTRUS, Markus , RETTELBACH, Nikolaus , SUBBARAMAN, Vignesh , WEISS, Oliver , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Christian
发明人： FUCHS, Guillaume , MULTRUS, Markus , RETTELBACH, Nikolaus , SUBBARAMAN, Vignesh , WEISS, Oliver , GAYER, Marc , WARMBOLD, Patrick , GRIEBEL, Christian
IPC分类号： G10L19/00
CPC分类号： G10L19/02 , G10L19/0017 , G10L19/002
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 onto a symbol code 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. A mapping rule index value is individually associated to a numeric context value being a significant state value, and a common mapping rule index value is associated to different numeric context values laying within an interval bounded by interval boundaries. An audio encoded uses a similar concept.
摘要翻译：用于根据编码的音频信息提供解码的音频信息的音频解码器包括：算术解码器，用于根据频谱值的算术编码表示提供多个解码的频谱值;以及频域 - 时域转换器，用于使用解码的频谱值提供时域音频表示，以便获得解码的音频信息。算术解码器被配置为根据由数字当前上下文值描述的上下文状态来选择描述代码值到符号代码上的映射的映射规则。算术解码器被配置为根据多个先前解码的频谱值来确定数字电流上下文值。算术解码器被配置为评估散列表，其条目在数字上下文值和数字上下文值的间隔的边界之间定义重要状态值，以便选择映射规则。映射规则索引值分别与作为重要状态值的数字上下文值相关联，并且公共映射规则索引值与放置在由间隔边界限定的间隔内的不同数值上下文值相关联。音频编码使用类似的概念。

18. 发明申请

WO2010003521A1 METHOD AND DISCRIMINATOR FOR CLASSIFYING DIFFERENT SEGMENTS OF A SIGNAL 审中-公开
标题翻译：用于分类信号不同部分的方法和解决方案
公开(公告)号：WO2010003521A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004339
申请日：2009-06-16
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , FUCHS, Guillaume , BAYER, Stefan , NAGEL, Frederik , HERRE, Jürgen , RETTELBACH, Nikolaus , WABNIK, Stefan , YOKOTANI, Yoshikazu , HIRSCHFELD, Jens , LECOMTE, Jérémie
发明人： FUCHS, Guillaume , BAYER, Stefan , NAGEL, Frederik , HERRE, Jürgen , RETTELBACH, Nikolaus , WABNIK, Stefan , YOKOTANI, Yoshikazu , HIRSCHFELD, Jens , LECOMTE, Jérémie
IPC分类号： G10L11/00 , G10L19/14
CPC分类号： G10L19/20 , G10L19/22 , G10L25/00 , G10L25/51 , G10L2025/783
摘要： For classifying different segments of a signal which comprises segments of at least a first type and second type, e.g. audio and speech segments, the signal is short- term classified (150) on the basis of the at least one short-term feature extracted from the signal and a short- term classification result (152) is delivered. The signal is also long-term classified (154) on the basis of the at least one short-term feature and at least one long-term feature extracted from the signal and a long-term classification result (156) is delivered. The short-term classification result (152) and the long-term classification result (156) are combined (158) to provide an output signal (160) indicating whether a segment of the signal is of the first type or of the second type.
摘要翻译：用于对包括至少第一类型和第二类型的段的信号的不同段进行分类。音频和语音段，信号是基于从信号提取的至少一个短期特征和短期分类结果（152）的短期分类（150）。信号也是基于至少一个短期特征和从信号提取的至少一个长期特征和长期分类结果（156）的长期分类（154）。短期分类结果（152）和长期分类结果（156）被组合（158）以提供指示信号的片段是第一类型还是第二类型的输出信号（160）。

19. 发明申请

WO2010003479A1 AUDIO ENCODER AND AUDIO DECODER 审中-公开
标题翻译：音频编码器和音频解码器
公开(公告)号：WO2010003479A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/003521
申请日：2009-05-18
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , MULTRUS, Markus , GRILL, Bernhard , FUCHS, Guillaume , GEYERSBERGER, Stefan , RETTELBACH, Nikolaus , BACIGALUPO, Virgilio
发明人： MULTRUS, Markus , GRILL, Bernhard , FUCHS, Guillaume , GEYERSBERGER, Stefan , RETTELBACH, Nikolaus , BACIGALUPO, Virgilio
IPC分类号： G10L19/02
CPC分类号： G10L19/02 , G10L19/022 , H03M7/30
摘要： An audio encoder (100) for encoding segments of coefficients, the segments of coefficients representing different time or frequency resolutions of a sampled audio signal, the audio encoder (100) comprising a processor (110) for deriving a coding context for a currently encoded coefficient of a current segment based on a previously encoded coefficient of a previous segment, the previously encoded coefficient representing a different time or frequency resolution than the currently encoded coefficient. The audio encoder (100) further comprises an entropy encoder (120) for entropy encoding the current coefficient based on the coding context to obtain an encoded audio stream.
摘要翻译：一种用于编码系数段的音频编码器（100），代表采样音频信号的不同时间或频率分辨率的系数段，音频编码器（100）包括用于导出当前编码系数的编码上下文的处理器（110）基于先前编码的前一段的系数的当前段的先前编码系数表示与当前编码系数不同的时间或频率分辨率。音频编码器（100）还包括熵编码器（120），用于基于编码上下文对当前系数进行熵编码，以获得编码音频流。

20. 发明申请

WO2008151755A1 AUDIO ENCODER FOR ENCODING AN AUDIO SIGNAL HAVING AN IMPULSE- LIKE PORTION AND STATIONARY PORTION, ENCODING METHODS, DECODER, DECODING METHOD; AND ENCODED AUDIO SIGNAL 审中-公开
标题翻译：用于编码具有类似部分和静止部分的音频信号的音频编码器，编码方法，解码器，解码方法; 和编码音频信号
公开(公告)号：WO2008151755A1
公开(公告)日：2008-12-18
申请号：PCT/EP2008/004496
申请日：2008-06-05
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , HERRE, Jürgen , GEIGER, Ralf , BAYER, Stefan , FUCHS, Guillaume , KRÄMER, Ulrich , RETTELBACH, Nikolaus , GRILL, Bernhard
发明人： HERRE, Jürgen , GEIGER, Ralf , BAYER, Stefan , FUCHS, Guillaume , KRÄMER, Ulrich , RETTELBACH, Nikolaus , GRILL, Bernhard
IPC分类号： G10L19/14
CPC分类号： G10L19/20
摘要： An audio encoder for encoding an audio signal includes an impulse extractor (10) for extracting an impulse-like portion from the audio signal. This impulse-like portion is encoded and forwarded to an output interface (22). Furthermore, the audio encoder includes a signal encoder (16) which encodes a residual signal derived from the original audio signal so that the impulse-like portion is reduced or eliminated in the residual audio signal. The output interface (22) forwards both, the encoded signals, i.e., the encoded impulse signal (12) and the encoded residual signal (20) for transmission or storage. On the decoder-side, both signal portions are separately decoded and then combined to obtain a decoded audio signal.
摘要翻译：用于对音频信号进行编码的音频编码器包括用于从音频信号中提取脉冲状部分的脉冲提取器（10）。该脉冲状部分被编码并转发到输出接口（22）。此外，音频编码器包括信号编码器（16），其对从原始音频信号导出的残留信号进行编码，使得在残留音频信号中减少或消除脉冲状部分。输出接口（22）将编码的信号，即编码的脉冲信号（12）和编码的残留信号（20）两者转发以用于传输或存储。在解码器侧，两个信号部分被单独解码，然后被组合以获得解码的音频信号。

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