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121. 发明公开

EP3407352A1 SPEECH DECODER, SPEECH ENCODER, SPEECH DECODING METHOD, SPEECH ENCODING METHOD, SPEECH DECODING PROGRAM, AND SPEECH ENCODING PROGRAM 有权
公开(公告)号：EP3407352A1
公开(公告)日：2018-11-28
申请号：EP18181397.3
申请日：2012-02-16
申请人： NTT DOCOMO, INC.
发明人： KIKUIRI, Kei , YAMAGUCHI, Atsushi
IPC分类号： G10L21/0388 , G10L19/02 , G10L25/18 , G10L25/21
CPC分类号： G10L19/02 , G10L21/0388 , G10L25/18 , G10L25/21
摘要： A speech decoder (1) includes a demultiplexing unit (1a), a low frequency band decoding unit (1b), a band splitting filter bank unit (1c), a coded sequence analysis unit (1d), a coded sequence decoding / dequantization unit (1e), a high frequency band generation unit (1h), low frequency band time envelope calculation units (1f 1 to 1f n ) that acquire a plurality of low frequency band time envelopes, a time envelope calculation unit (1g) that calculates high frequency band time envelopes using time envelope information and the plurality of low frequency band time envelopes, a time envelope adjustment unit (1i) that adjusts the time envelope of high frequency band components using the time envelopes obtained by the time envelope calculation unit (1g), and a band synthesis filter bank unit (1j).

122. 发明公开

EP3382699A1 AUDIO ENCODER AND DECODER FOR INTERLEAVED WAVEFORM CODING 有权转让
公开(公告)号：EP3382699A1
公开(公告)日：2018-10-03
申请号：EP18167164.5
申请日：2014-04-04
申请人： Dolby International AB
发明人： KJOERLING, Kristofer , THESING, Robin , MUNDT, Harald , PURNHAGEN, Heiko , ROEDEN, Karl Jonas
IPC分类号： G10L19/02 , G10L21/038 , G10L21/0388
CPC分类号： G10L19/0208 , G10L19/02 , G10L19/0212 , G10L19/26 , G10L21/038 , G10L21/0388
摘要： There is provided methods and apparatuses for decoding and encoding of audio signals. In particular, a method for decoding includes receiving a waveform-coded signal having a spectral content corresponding to a subset of the frequency range above a cross-over frequency. The waveform-coded signal is interleaved with a parametric high frequency reconstruction of the audio signal above the cross-over frequency. In this way an improved reconstruction of the high frequency bands of the audio signal is achieved.

123. 发明授权

EP3044790B1 TIME-ALIGNMENT OF QMF BASED PROCESSING DATA 有权转让
公开(公告)号：EP3044790B1
公开(公告)日：2018-10-03
申请号：EP14759217.4
申请日：2014-09-08
申请人： Dolby International AB
发明人： KJOERLING, Kristofer , PURNHAGEN, Heiko , POPP, Jens
IPC分类号： G10L21/0388
CPC分类号： G10L19/167 , G10L19/018 , G10L19/0204 , G10L19/032 , G10L21/0388
摘要： The present document relates to time-alignment of encoded data of an audio encoder with associated metadata, such as spectral band replication (SBR) metadata. An audio decoder (100, 300) configured to determine a reconstructed frame of an audio signal (237) from an access unit (110) of a received data stream is described. The access unit (110) comprises waveform data (111) and metadata (112), wherein the waveform data (111) and the metadata (112) are associated with the same reconstructed frame of the audio signal (127). The audio decoder (100, 300) comprises a waveform processing path (101, 102, 103, 104, 105) configured to generate a plurality of waveform subband signals (123) from the waveform data (111), and a metadata processing path (108, 109) configured to generate decoded metadata (128) from the metadata (111).

124. 发明公开

EP3262639A1 APPARATUS AND METHOD FOR PROCESSING AN AUDIO SIGNAL TO OBTAIN A PROCESSED AUDIO SIGNAL USING A TARGET TIME-DOMAIN ENVELOPE 有权
标题翻译：用于处理音频信号以使用目标时域信封获得已处理音频信号的装置和方法
公开(公告)号：EP3262639A1
公开(公告)日：2018-01-03
申请号：EP16705948.4
申请日：2016-02-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： DITTMAR, Christian , MÜLLER, Meinard , DISCH, Sascha
IPC分类号： G10L19/03 , G10L21/0272 , G10L21/0388 , G10L25/03
摘要： Subject of the invention is an apparatus described by a schematic block diagram for processing an audio signal to obtain a processed audio signal. The apparatus includes a phase calculator for calculating phase values for spectral values of a sequence of frequency-domain frames representing overlapping frames of the audio signal. Moreover, the phase calculator is configured to calculate the phase values based on information on a target time-domain envelope related to the processed audio signal, so that the processed audio signal has at least in an approximation the target time-domain envelope and a spectral envelope determined by the sequence of frequency-domain frames.

125. 发明授权

EP2674942B1 METHOD AND DEVICE FOR AUDIO BANDWIDTH EXTENSION 失效
标题翻译：用于音频带宽扩展的方法和设备
公开(公告)号：EP2674942B1
公开(公告)日：2017-10-25
申请号：EP12745345.4
申请日：2012-02-08
申请人： LG Electronics Inc. , Gwangju Institute of Science and Technology
发明人： JEONG, Gyu Hyeok , LEE, Young Han , JEON, Hye Jeong , KIM, Hong Kook , KANG, In Gyu , KIM, Lag Young
IPC分类号： G10L19/02 , G10L21/0388
CPC分类号： G10L19/00 , G10L19/0212 , G10L21/0388

126. 发明公开

EP3211639A1 DIGITAL SOUND PROCESSING DEVICE, DIGITAL SOUND PROCESSING METHOD, DIGITAL SOUND PROCESSING PROGRAM 有权
标题翻译：数字声音处理装置，数字声音处理方法，数字声音处理程序
公开(公告)号：EP3211639A1
公开(公告)日：2017-08-30
申请号：EP15851770.6
申请日：2015-09-07
申请人： JVC Kenwood Corporation
发明人： YASURA, Sadahiro
IPC分类号： G10L21/0332 , G10L21/0388 , G10L19/00
CPC分类号： G10L19/24 , G10L19/00 , G10L21/0332 , G10L21/0388
摘要： A waveform correction processor (10) corrects the waveform of a first digital audio signal (a CD signal, for example) having a first sampling frequency. A bit depth and sampling frequency converter (50) converts the first digital audio signal with the waveform corrected by the first waveform correction processor to a second digital audio signal (a high-resolution digital audio signal, for example) having a second sampling frequency, which is higher than the first sampling frequency. The waveform correction processor (20) corrects the waveform of the second digital audio signal.
摘要翻译：波形校正处理器（10）校正具有第一采样频率的第一数字音频信号（例如CD信号）的波形。比特深度和采样频率转换器（50）将具有由第一波形校正处理器校正的波形的第一数字音频信号转换为具有第二采样频率的第二数字音频信号（例如高分辨率数字音频信号）这比第一采样频率高。波形校正处理器（20）校正第二数字音频信号的波形。

127. 发明公开

EP3166107A1 SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD 有权
标题翻译：信号处理装置和信号处理方法
公开(公告)号：EP3166107A1
公开(公告)日：2017-05-10
申请号：EP15814179.6
申请日：2015-06-22
申请人： Clarion Co., Ltd.
发明人： HASHIMOTO, Takeshi , WATANABE, Tetsuo , FUJITA, Yasuhiro , FUKUE, Kazutomo , KUMAGAI, Takatomi
IPC分类号： G10L21/0388
CPC分类号： G10L21/0332 , G10L21/0232 , G10L21/0388
摘要： There is provided a signal processing device, comprising: a frequency detecting means that detects a frequency satisfying a predetermined condition from an audio signal; an offset means that gives an offset to the detected frequency by the frequency detecting means in accordance with a frequency property at the detected frequency or around the detected frequency; a reference signal generating means that generates a reference signal by extracting a signal from the audio signal based on the detected frequency offset by the offset means; an interpolation signal generating means that generates an interpolation signal based on the generated reference signal; and a signal synthesizing means that performs high band interpolation by synthesizing the generated interpolation signal and the audio signal.
摘要翻译：提供了一种信号处理设备，包括：频率检测装置，用于从音频信号中检测满足预定条件的频率; 偏移装置，根据检测频率或检测频率附近的频率特性，由频率检测装置给检测频率提供偏移; 参考信号生成装置，其基于由所述偏移装置检测到的频率偏移，通过从所述音频信号中提取信号来生成参考信号; 内插信号生成部件，其基于生成的参考信号生成内插信号; 以及信号合成装置，通过合成所生成的内插信号和音频信号来执行高频带内插。

128. 发明公开

EP3025344A1 APPARATUS AND METHOD FOR DECODING AN ENCODED AUDIO SIGNAL USING A CROSS-OVER FILTER AROUND A TRANSITION FREQUENCY 有权
标题翻译：装置和方法用于解码编码的音频信号，使用交会滤镜应用于过频
公开(公告)号：EP3025344A1
公开(公告)日：2016-06-01
申请号：EP14741264.7
申请日：2014-07-15
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： DISCH, Sascha , GEIGER, Ralf , HELMRICH, Christian , NAGEL, Frederik , NEUKAM, Christian , SCHMIDT, Konstantin , FISCHER, Michael
IPC分类号： G10L21/0388 , G10L19/028 , G10L19/02
CPC分类号： G10L19/008 , G10L19/02 , G10L19/0204 , G10L19/0208 , G10L19/0212 , G10L19/022 , G10L19/025 , G10L19/03 , G10L19/032 , G10L19/06 , G10L21/0388 , G10L25/06 , H04S1/007
摘要： Apparatus for decoding an encoded audio signal comprising an encoded core signal (1), comprising: a core decoder (1400) for decoding the encoded core signal (1401) to obtain a decoded core signal; a tile generator (1404) for generating one or more spectral tiles having frequencies not included in the decoded core signal using a spectral portion of the decoded core signal; and a cross-over filter (1406) for spectrally cross-over filtering the decoded core signal and a first frequency tile having frequencies extending from a gap filling frequency (309) to an upper border frequency or for spectrally cross-over filtering a first frequency tile and a second frequency tile.

129. 发明授权

EP2786377B1 CHROMA EXTRACTION FROM AN AUDIO CODEC 有权
标题翻译： CHROMA-EXTRAKTION AUS EINEM AUDIOCODEC
公开(公告)号：EP2786377B1
公开(公告)日：2016-03-02
申请号：EP12824762.4
申请日：2012-11-28
申请人： Dolby International AB
发明人： BISWAS, Arijit , FINK, Marco , SCHUG, Michael
IPC分类号： G10L25/54 , G10L21/0388 , G10L19/022
CPC分类号： G10L19/02 , G10H1/0008 , G10H1/383 , G10H2210/066 , G10H2250/225 , G10L19/022 , G10L19/038 , G10L21/0388 , G10L25/54
摘要： The present document relates to methods and systems for music information retrieval (MIR). In particular, the present document relates to methods and systems for extracting a chroma vector from an audio signal. A method (900) for determining a chroma vector (100) for a block of samples of an audio signal (301) is described. The method (900) comprises receiving (901) a corresponding block of frequency coefficients derived from the block of samples of the audio signal (301) from a core encoder (412) of a spectral band replication based audio encoder (410) adapted to generate an encoded bitstream (305) of the audio signal (301) from the block of frequency coefficients; and determining (904) the chroma vector (100) for the block of samples of the audio signal (301) based on the received block of frequency coefficients.
摘要翻译：本文件涉及用于音乐信息检索（MIR）的方法和系统。特别地，本文件涉及从音频信号中提取色度矢量的方法和系统。描述了一种用于确定音频信号（301）的采样块的色度矢量（100）的方法（900）。方法（900）包括从适于生成的基于频谱带复制的音频编码器（410）的核心编码器（412）接收（901）从音频信号（301）的样本块导出的相应的频率系数块（901）根据频率系数块的音频信号（301）的编码比特流（305）; 以及基于所接收的频率系数块来确定用于所述音频信号（301）的采样块的色度矢量（904）（904）。

130. 发明授权

EP2831875B1 BANDWIDTH EXTENSION OF HARMONIC AUDIO SIGNAL 有权
标题翻译：带宽扩展的和声音频信号
公开(公告)号：EP2831875B1
公开(公告)日：2015-12-16
申请号：EP12821332.9
申请日：2012-12-21
申请人： Telefonaktiebolaget LM Ericsson (PUBL)
发明人： NÄSLUND, Sebastian , GRANCHAROV, Volodya , JANSSON TOFTGÅRD, Tomas
IPC分类号： G10L21/0388 , G10L19/02
CPC分类号： G10L19/0204 , G10L19/02 , G10L19/028 , G10L21/0388 , G10L25/21

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