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1. 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）。

2. 发明申请

WO2010003617A1 LOW BITRATE AUDIO ENCODING/DECODING SCHEME WITH COMMON PREPROCESSING 审中-公开
标题翻译：低分辨率音频编码/解码方案与通用预处理
公开(公告)号：WO2010003617A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004873
申请日：2009-07-06
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , GRILL, Bernhard , BAYER, Stefan , FUCHS, Guillaume , GEYERSBERGER, Stefan , GEIGER, Ralf , HILPERT, Johannes , KRAEMER, Ulrich , LECOMTE, Jeremie , MULTRUS, Markus , NEUENDORF, Max , POPP, Harald , RETTELBACH, Nikolaus , NAGEL, Frederik , DISCH, Sascha , HERRE, Juergen , YOKOTANI, Yoshikazu , WABNIK, Stefan , SCHULLER, Gerald , HIRSCHFELD, Jens
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 , NAGEL, Frederik , DISCH, Sascha , HERRE, Juergen , YOKOTANI, Yoshikazu , WABNIK, Stefan , SCHULLER, Gerald , HIRSCHFELD, Jens
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 audio encoder comprises a common preprocessing stage (100), an information sink based encoding branch (400) such as spectral domain encoding branch, a information source based encoding branch (500) such as an LPC-domain encoding branch and a switch (200) for switching between these branches at inputs into these branches or outputs of these branches controlled by a decision stage (300). An audio decoder comprises a spectral domain decoding branch, an LPC- domain decoding branch, one or more switches for switching between the branches and a common post-processing stage for post-processing a time-domain audio signal for obtaining a post-processed audio signal.
摘要翻译：音频编码器包括公共预处理级（100），诸如频域编码分支的基于信息集合的编码分支（400），诸如LPC域编码分支的信息源编码分支（500）和开关（200 ），用于在由决策阶段（300）控制的这些分支的这些分支或输出的输入处在这些分支之间切换。音频解码器包括频域解码分支，LPC域解码分支，用于在分支之间切换的一个或多个开关和用于后处理时域音频信号以用于获得后处理音频的公共后处理级信号。

3. 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。

4. 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。

5. 发明申请

WO2010112587A1 APPARATUS, METHOD AND COMPUTER PROGRAM FOR GENERATING A REPRESENTATION OF A BANDWIDTH-EXTENDED SIGNAL ON THE BASIS OF AN INPUT SIGNAL REPRESENTATION USING A COMBINATION OF A HARMONIC BANDWIDTH-EXTENSION AND A NON-HARMONIC BANDWIDTH-EXTENSION 审中-公开
标题翻译：使用谐波带宽扩展和非谐波带宽扩展的组合来生成基于输入信号表示的带宽扩展信号的表示的装置，方法和计算机程序
公开(公告)号：WO2010112587A1
公开(公告)日：2010-10-07
申请号：PCT/EP2010/054422
申请日：2010-04-01
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , NAGEL, Frederik , NEUENDORF, Max , RETTELBACH, Nikolaus , LECOMTE, Jérémie , MULTRUS, Markus , GRILL, Bernhard
发明人： NAGEL, Frederik , NEUENDORF, Max , RETTELBACH, Nikolaus , LECOMTE, Jérémie , MULTRUS, Markus , GRILL, Bernhard
IPC分类号： G10L21/02
CPC分类号： G10L19/008 , G10L19/18 , G10L21/038
摘要： An apparatus for generating a representation of a bandwidth-extended signal on the basis of an input signal representation comprises a phase vocoder configured to obtain values of a spectral domain representation of a first patch of the bandwidth-extended signal on the basis of the input signal representation. The apparatus also comprises a value copier configured to copy a set of values of the spectral domain representation of the first patch, which values are provided by the phase vocoder, to obtain a set of values of a spectral domain representation of a second patch, wherein the second patch is associated with higher frequencies than the first patch. The apparatus is configured to obtain the representation of the bandwidth-extended signal using the values of the spectral domain representation of the first patch and the values of the spectral domain representation of the second patch.
摘要翻译：用于基于输入信号表示产生带宽扩展信号的表示的装置包括相位声码器，被配置为基于输入信号获得带宽扩展信号的第一片段的频域表示的值表示。所述装置还包括值复制器，其被配置为复制由所述相位声码器提供的所述第一贴片的所述频谱域表示的一组值，以获得第二贴片的频域表示的一组值，其中第二贴片与比第一贴片更高的频率相关联。该装置被配置为使用第一补丁的频域表示的值和第二补丁的频域表示的值来获得带宽扩展信号的表示。

6. 发明申请

WO2011048118A1 AUDIO SIGNAL ENCODER, AUDIO SIGNAL DECODER, METHOD FOR PROVIDING AN ENCODED REPRESENTATION OF AN AUDIO CONTENT, METHOD FOR PROVIDING A DECODED REPRESENTATION OF AN AUDIO CONTENT AND COMPUTER PROGRAM FOR USE IN LOW DELAY APPLICATIONS 审中-公开
标题翻译：音频信号编码器，音频信号解码器，用于提供音频内容的编码表示的方法，用于提供音频内容的解码表示的方法和用于低延迟应用的计算机程序
公开(公告)号：WO2011048118A1
公开(公告)日：2011-04-28
申请号：PCT/EP2010/065753
申请日：2010-10-19
申请人： FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , GEIGER, Ralf , SCHNELL, Markus , LECOMTE, Jérémie , SCHMIDT, Konstantin , FUCHS, Guillaume , RETTELBACH, Nikolaus
发明人： GEIGER, Ralf , SCHNELL, Markus , LECOMTE, Jérémie , SCHMIDT, Konstantin , FUCHS, Guillaume , RETTELBACH, Nikolaus
IPC分类号： G10L19/02 , G10L19/04 , G10L19/14
CPC分类号： G10L19/0212 , G10L19/022 , G10L19/20
摘要： An audio signal encoder (100) comprises a transform-domain path (12) configured to obtain a set of spectral coefficients (124) and noise-shaping information (126) on the basis of a time-domain representation (122) of a portion of the audio content to be encoded in a transform-domain mode. The transform-domain path comprises a time-domain-to-frequency-domain converter (130) configured to window a time-domain representation of the audio content, or a pre-processed version thereof, to obtain a windowed representation of the audio content, and to apply a time-domain-to-frequency-domain conversion, to derive a set of spectral coefficients from the windowed time-domain representation of the audio content. The audio signal decoder comprises a CELP path (140) configured to obtain an code-excitation information (144) and a linear-prediction-domain parameter information (146) on the basis of a portion of the audio content to be encoded in a CELP mode. The time-domain-to-frequency-domain converter (136) is configured to apply a predetermined asymmetric analysis window (520) for a windowing of a current portion of the audio content to be encoded in the transform-domain mode and following a portion of the audio content encoded in the transform-domain mode both if the current portion of the audio content is followed by a subsequent portion of the audio content to be encoded in the transform-domain mode and if the current portion of the audio content is followed by a subsequent portion of the audio content to be encoded in the CELP mode. The audio signal encoder is configured to selectively provide an aliasing cancellation information (164) if the current portion of the audio content is followed by a subsequent portion of the audio content to be encoded in the CELP mode.
摘要翻译：音频信号编码器（100）包括变换域路径（12），其经配置以基于部分的时域表示（122）获得一组频谱系数（124）和噪声整形信息（126）要以变换域模式编码的音频内容。变换域路径包括被配置为对音频内容的时域表示或其预处理版本进行窗口化的时域 - 频域转换器（130），以获得音频内容的窗口化表示并且应用时域到频域转换，从音频内容的加窗时域表示中导出一组频谱系数。音频信号解码器包括CELP路径（140），其被配置为基于要在CELP中编码的音频内容的一部分来获得码激励信息（144）和线性预测域参数信息（146）模式。时域 - 频域转换器（136）被配置为对预定的非对称分析窗口（520）应用于在变换域模式中对要编码的音频内容的当前部分的加窗，并且遵循一部分如果音频内容的当前部分后面是要以变换域模式编码的音频内容的后续部分，并且如果跟随音频内容的当前部分，则以变换域模式编码的音频内容通过CELP模式中要编码的音频内容的后续部分。音频信号编码器被配置为如果音频内容的当前部分跟随着要以CELP模式编码的音频内容的后续部分，则选择性地提供混叠消除信息（164）。

7. 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。

8. 发明申请

WO2010003539A1 AUDIO SIGNAL SYNTHESIZER AND AUDIO SIGNAL ENCODER 审中-公开
标题翻译：音频信号合成器和音频信号编码器
公开(公告)号：WO2010003539A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004451
申请日：2009-06-19
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , NAGEL, Frederik , DISCH, Sascha , RETTELBACH, Nikolaus , NEUENDORF, Max , GRILL, Bernhard , KRÄMER, Ulrich , WABNIK, Stefan
发明人： NAGEL, Frederik , DISCH, Sascha , RETTELBACH, Nikolaus , NEUENDORF, Max , GRILL, Bernhard , KRÄMER, Ulrich , WABNIK, Stefan
IPC分类号： G10L21/02
CPC分类号： G10L21/038 , G10L19/02
摘要： In accordance with a first aspect of the invention, an audio signal synthesizer generates a synthesis audio signal having a first frequency band and a second synthesized frequency band derived from the first frequency band. The audio signal synthesizer comprises a patch generator, a spectral converter, a raw signal processor and a combiner. The patch generator performs at least two different patching algorithms, wherein each patching algorithm generates a raw signal having signal components in the second synthesized frequency band using an audio signal having signal components in the first frequency band. The patch generator is adapted to select one of the at least two different patching algorithms in response to a control information for a first time portion and the other of the at least two different patching algorithms in response to the control information for a second time portion different from the first time portion to obtain the raw signal for the first and the second time portion. The spectral converter converts the raw signal into a raw signal spectral representation. The raw signal processor processes the raw signal spectral representation in response to spectral domain spectral band replication parameters to obtain an adjusted raw signal spectral representation. The combiner combines an audio signal having signal components in the first band or a signal derived from the audio signal with the adjusted raw signal spectral representation or with a further signal derived from the adjusted raw signal spectral representation to obtain the synthesis audio signal.
摘要翻译：根据本发明的第一方面，音频信号合成器产生具有从第一频带导出的第一频带和第二合成频带的合成音频信号。音频信号合成器包括片生成器，频谱转换器，原始信号处理器和组合器。贴片发生器执行至少两种不同的修补算法，其中每个修补算法使用具有第一频带中的信号分量的音频信号来生成具有第二合成频带中的信号分量的原始信号。补丁生成器适于响应于第一时间部分的控制信息和所述至少两个不同修补算法中的另一个响应于第二时间部分的控制信息而选择至少两个不同的修补算法中的一个不同从第一时间部分获得第一和第二时间部分的原始信号。光谱转换器将原始信号转换为原始信号光谱表示。原始信号处理器响应于频域谱带复制参数处理原始信号频谱表示，以获得经调整的原始信号频谱表示。组合器将具有第一频带中的信号分量的音频信号或从音频信号导出的信号与经调整的原始信号频谱表示或者从经调整的原始信号频谱表示导出的另一信号组合以获得合成音频信号。

9. 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。

10. 发明申请

WO2010003663A1 AUDIO ENCODER AND DECODER FOR ENCODING FRAMES OF SAMPLED AUDIO SIGNALS 审中-公开
标题翻译：音频编码器和解码器用于编码采样音频信号的框架
公开(公告)号：WO2010003663A1
公开(公告)日：2010-01-14
申请号：PCT/EP2009/004947
申请日：2009-07-08
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , VOICEAGE CORPORATION , LECOMTE, Jérémie , GOURNAY, Philippe , BAYER, Stefan , MULTRUS, Markus , RETTELBACH, Nikolaus
发明人： LECOMTE, Jérémie , GOURNAY, Philippe , BAYER, Stefan , MULTRUS, Markus , RETTELBACH, Nikolaus
IPC分类号： G10L19/14
CPC分类号： G10L19/20
摘要： An audio encoder (100) adapted for encoding frames of a sampled audio signal to obtain encoded frames, wherein a frame comprises a number of time domain audio samples, comprising a predictive coding analysis stage (110) for determining information on coefficients of a synthesis filter and information on a prediction domain frame based on a frame of audio samples. The audio encoder (100) further comprises a frequency domain transformer (120) for transforming a frame of audio samples to the frequency domain to obtain a frame spectrum and an encoding domain decider (130). Moreover, the audio encoder (100) comprises a controller (140) for determining an information on a switching coefficient when the encoding domain decider decides that encoded data of a current frame is based on the information on the coefficients and the information on the prediction domain frame when encoded data of a previous frame was encoded based on a previous frame spectrum.
摘要翻译：一种适于编码采样音频信号的帧以获得编码帧的音频编码器（100），其中一帧包括多个时域音频样本，包括用于确定关于合成滤波器的系数的信息的预测编码分析阶段（110）以及基于音频样本帧的关于预测域帧的信息。音频编码器（100）还包括频域变换器（120），用于将音频样本的帧变换到频域以获得帧频和编码域决定器（130）。此外，音频编码器（100）包括控制器（140），用于当编码域决定器基于关于系数的信息和关于预测域的信息来确定当前帧的编码数据时，确定关于切换系数的信息基于前一帧频谱对前一帧的编码数据进行编码的帧。

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