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1. 发明申请

WO2014063755A1 PORTABLE ELECTRONIC DEVICE WITH AUDIO RENDERING MEANS AND AUDIO RENDERING METHOD 审中-公开
标题翻译：具有音频渲染方式的便携式电子设备和音频渲染方法
公开(公告)号：WO2014063755A1
公开(公告)日：2014-05-01
申请号：PCT/EP2012/071306
申请日：2012-10-26
申请人： HUAWEI TECHNOLOGIES CO., LTD. , FALLER, Christof , FAVROT, Alexis , VIRETTE, David , LANG, Yue
发明人： FALLER, Christof , FAVROT, Alexis , VIRETTE, David , LANG, Yue
IPC分类号： H04R3/04 , H04M1/60 , H03G5/02 , H04M9/08
CPC分类号： H04R3/04 , H03G5/165 , H04M9/082 , H04R5/02 , H04R2499/11
摘要： The application relates to a portable electronic device (200), comprising: at least one loudspeaker (217); and audio rendering means (201) configured for adapting an audio signal (215) before submitting the audio signal (215) to the at least one loudspeaker (217), wherein the adapting is according to a function of a positioning of the portable electronic device (200) relative to a listener using the portable electronic device (200).
摘要翻译：本申请涉及一种便携式电子设备（200），包括：至少一个扬声器（217）; 以及音频渲染装置（201），其被配置用于在将所述音频信号（215）提交给所述至少一个扬声器（217）之前适配音频信号（215），其中所述适配是根据所述便携式电子设备（200）相对于收听者使用便携式电子设备（200）。

2. 发明申请

WO2013029225A1 PARAMETRIC MULTICHANNEL ENCODER AND DECODER 审中-公开
标题翻译：参数多通道编码器和解码器
公开(公告)号：WO2013029225A1
公开(公告)日：2013-03-07
申请号：PCT/CN2011/079051
申请日：2011-08-29
申请人： HUAWEI TECHNOLOGIES CO., LTD. , FALLER, Christof , VIRETTE, David , LANG, Yue
发明人： FALLER, Christof , VIRETTE, David , LANG, Yue
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： The present invention relates to a parametric multichannel encoder 501 for encoding a multichannel signal comprising a first channel signal and a second channel signal, the parametric multichannel encoder 501 comprising an estimator 505 for estimating an interaural time difference between the first channel signal and the second channel signal to obtain an estimate of the interaural time difference, the estimator 505 being further configured to determine a fuzziness indicator, the fuzziness indicator indicating a grade of non-reliability of the estimate of the interaural time difference; a downmix signal generator 507 for generating a downmix signal from the first channel signal and the second channel signal; and a multiplexer 511 for multiplexing the downmix signal, the interaural time difference, and the fuzziness parameter to obtain an encoded signal.
摘要翻译：本发明涉及用于对包括第一信道信号和第二信道信号的多信道信号进行编码的参数化多信道编码器501，参数多信道编码器501包括用于估计第一信道信号和第二信道之间的耳间时间差的估计器505 信号以获得昼间时间差的估计，估计器505还被配置为确定模糊指示符，模糊指示符指示玄度时间差的估计的不可靠度等级; 降混信号发生器507，用于从第一通道信号和第二通道信号产生下混合信号; 以及用于多路复用下混合信号，耳间时间差和模糊参数以获得编码信号的多路复用器511。

3. 发明申请

WO2013040738A1 A METHOD AND AN APPARATUS FOR GENERATING AN ACOUSTIC SIGNAL WITH AN ENHANCED SPATIAL EFFECT 审中-公开
标题翻译：用于产生具有增强空间效应的声学信号的方法和装置
公开(公告)号：WO2013040738A1
公开(公告)日：2013-03-28
申请号：PCT/CN2011/079806
申请日：2011-09-19
申请人： HUAWEI TECHNOLOGIES CO., LTD. , FALLER, Christof , VIRETTE, David , LANG, Yue
发明人： FALLER, Christof , VIRETTE, David , LANG, Yue
IPC分类号： H04S1/00
CPC分类号： H04S7/307 , H04R2499/11 , H04S1/002 , H04S5/005
摘要： An apparatus and a method for generating an acoustic signal with an enhanced spatial effect, said apparatus comprising a signal filter bank adapted to filter a difference audio signal with a filter characteristic to limit a bandwidth of said difference audio signal, wherein said bandwidth limited difference audio signal is applied to at least one pair of loudspeakers for dipole sound emission.
摘要翻译：一种用于产生具有增强的空间效果的声信号的装置和方法，所述装置包括信号滤波器组，适于滤波具有滤波器特性的差分音频信号以限制所述差分音频信号的带宽，其中所述带宽限制差音频信号被施加到用于偶极声发射的至少一对扬声器。

4. 发明申请

WO2014121828A1 METHOD FOR RENDERING A STEREO SIGNAL 审中-公开
标题翻译：渲染立体声信号的方法
公开(公告)号：WO2014121828A1
公开(公告)日：2014-08-14
申请号：PCT/EP2013/052327
申请日：2013-02-06
申请人： HUAWEI TECHNOLOGIES CO., LTD. , FALLER, Christof , VIRETTE, David , LANG, Yue
发明人： FALLER, Christof , VIRETTE, David , LANG, Yue
IPC分类号： H04R5/04 , H04S7/00 , H04S1/00
CPC分类号： H04R5/04 , H04R2205/021 , H04R2499/11 , H04S1/007 , H04S7/303 , H04S2420/03
摘要： The invention relates to a method (500) for rendering a stereo audio signal (402) over a first loudspeaker (401) and a second loudspeaker (403) with respect to a desired direction (201), the stereo audio signal (402) comprising a first audio signal component (L) and a second audio signal component (R), the method (500) comprising: providing (501) a first rendering signal (408) based on a combination of the first audio signal component (L) and a first difference signal (diff_L) obtained based on a difference (diff) between the first audio signal component (L) and the second audio signal component (R) to the first loudspeaker (401), and providing a second rendering signal (410) based on a combination of the second audio signal component (R) and a second difference signal (diff_R) obtained based on the difference (diff) between the first audio signal component (L) and the second audio signal component (R) to the second loudspeaker (403), such that both difference signals (diff_L, diff_R) are different with respect to sign and one difference signal is delayed by a delay (τ) compared to the other difference signal to define a dipole signal, wherein the delay (τ) is adapted according to the desired direction (201).
摘要翻译：本发明涉及一种用于相对于期望方向（201）在第一扬声器（401）和第二扬声器（403）上呈现立体声音频信号（402）的方法（500），所述立体声音频信号（402）包括第一音频信号分量（L）和第二音频信号分量（R），所述方法（500）包括：基于所述第一音频信号分量（L）和基于第一音频信号分量（L）和与第一扬声器（401）的第二音频信号分量（R）之间的差（diff）获得的第一差分信号（diff_L），并提供第二渲染信号（410）基于第二音频信号分量（R）和基于第一音频信号分量（L）和第二音频信号分量（R）之间的差（diff））获得的第二音频信号分量（R）和第二差分信号（diff_R）的组合，扬声器（403），使得两个差分信号（diff_L，diff_R）相对于符号是不同的，并且一个差分信号与另一个差分信号相比延迟（τ），以限定偶极子信号，其中延迟（τ）根据期望的方向（201）适应。

5. 发明申请

WO2014106543A1 METHOD FOR DETERMINING A STEREO SIGNAL 审中-公开
标题翻译：用于确定立体信号的方法
公开(公告)号：WO2014106543A1
公开(公告)日：2014-07-10
申请号：PCT/EP2013/050112
申请日：2013-01-04
申请人： HUAWEI TECHNOLOGIES CO., LTD. , FALLER, Christof , VIRETTE, David , LANG, Yue
发明人： FALLER, Christof , VIRETTE, David , LANG, Yue
IPC分类号： G10L19/008
CPC分类号： H04S7/301 , H04R1/406 , H04R3/005 , H04R5/027 , H04R5/04 , H04S1/002 , H04S2400/09 , H04S2400/15
摘要： The invention relates to a method (200) for determining an output stereo signal (Y1, Y2) comprising: determining (201 ) a first differential signal (x1) based on a difference of a first input audio channel signal (m1) and a filtered version of a second input audio channel signal (m2) and determining a second differential signal (x2) based on a difference of the second input audio channel signal (m2) and a filtered version of the first input audio channel signal (m1); determining (203) a first power spectrum (P1) based on the first differential signal (x1) and determining a second power spectrum (P2) based on the second differential signal (x2); determining (205) a first weighting function (W1) and a second weighting function (W2) as a function of the first power spectrum (P1) and the second power spectrum (P2); wherein the first weighting function (W1) and the second weighting function (W2) comprise an exponential function; and filtering (207) a first signal, which represents a first combination of the first input audio channel signal (m1) and the second input audio channel signal (m2), with the first weighting function (W1) to obtain a first output audio channel signal (Y1) of the output stereo signal (Y1, Y2), and filtering a second signal, which represents a second combination of the first input audio channel signal (m1) and the second input audio channel signal (m2), with the second weighting function (W2) to obtain a second output audio channel signal (Y2) of the output stereo signal (Y1; Y2).
摘要翻译：本发明涉及一种用于确定输出立体声信号（Y1，Y2）的方法（200），包括：基于第一输入音频信道信号（m1）和被滤波的信号（m1）的差确定（201）第一差分信号基于所述第二输入音频信道信号（m2）的差和所述第一输入音频信道信号（m1）的滤波版本，确定第二差分信号（x2）的第二输入音频信道信号（m2）的版本; 基于所述第一差分信号（x1）确定（203）第一功率谱（P1），并且基于所述第二差分信号（x2）确定第二功率谱（P2）; 根据第一功率谱（P1）和第二功率谱（P2）确定（205）第一加权函数（W1）和第二加权函数（W2）; 其中所述第一加权函数（W1）和所述第二加权函数（W2）包括指数函数; 并且将表示第一输入音频通道信号（m1）和第二输入音频通道信号（m2）的第一组合）的第一信号与第一加权函数（W1）进行滤波（207），以获得第一输出音频通道输出立体声信号（Y1，Y2）的信号（Y1），并且对表示第一输入音频通道信号（m1）和第二输入音频通道信号（m2）的第二组合的第二信号进行滤波，第二信号加权函数（W2），以获得输出立体声信号（Y1; Y2）的第二输出音频通道信号（Y2）。

6. 发明申请

WO2012040898A1 DEVICE AND METHOD FOR POSTPROCESSING DECODED MULTI-CHANNEL AUDIO SIGNAL OR DECODED STEREO SIGNAL 审中-公开
标题翻译：解码多通道音频信号或解码立体信号的装置和方法
公开(公告)号：WO2012040898A1
公开(公告)日：2012-04-05
申请号：PCT/CN2010/077388
申请日：2010-09-28
申请人： HUAWEI TECHNOLOGIES CO., LTD. , LANG, Yue , VIRETTE, David , MIAO, Lei , WU, Wenhai
发明人： LANG, Yue , VIRETTE, David , MIAO, Lei , WU, Wenhai
IPC分类号： G10L19/00 , H01S1/00 , H04S5/00 , H04S3/00
CPC分类号： G10L19/008 , G10L21/0364
摘要： A device (101';201') for postprocessing at least one channel signal of a plurality of channel signals of a multi-channel signal is provided, in which the at least one channel signal is generated from a decoded downmix signal by a low-bit-rate audio coding/decoding system. The device (101';201') comprises: a receiver (103') for receiving the at least one channel signal generated from the decoded downmix signal, a time envelope of the decoded downmix signal, an interchannel time difference between the channel signal and the downmix signal, and a classification indication indicating a transient type of the downmix signal; and a postprocessor (105',213',215') for postprocessing the at least one channel signal based on the time envelope of the decoded downmix signal which is weighted by a respective weighting factor and is in dependence on the classification indication and the interchannel time difference.
摘要翻译：提供了一种用于对多信道信号的多个信道信号的至少一个信道信号进行后处理的装置（101'; 201'），其中通过低通道信号从解码的下混信号产生至少一个信道信号，比特率音频编码/解码系统。设备（101'; 201'）包括：接收器（103'），用于接收从解码的下混合信号产生的至少一个信道信号，解码的下混信号的时间包络，信道信号和降混信号，以及指示下混合信号的瞬时类型的分类指示; 以及后处理器（105'，213'，215'），用于根据解码的下混合信号的时间包络对相应的加权因子进行加权的后处理所述至少一个信道信号，并且依赖于分类指示和通道时间差异。

7. 发明申请

WO2013149671A1 MULTI-CHANNEL AUDIO ENCODER AND METHOD FOR ENCODING A MULTI-CHANNEL AUDIO SIGNAL 审中-公开
标题翻译：多频道音频编码器和编码多声道音频信号的方法
公开(公告)号：WO2013149671A1
公开(公告)日：2013-10-10
申请号：PCT/EP2012/056321
申请日：2012-04-05
申请人： HUAWEI TECHNOLOGIES CO., LTD. , VIRETTE, David , LANG, Yue , XU, Jianfeng
发明人： VIRETTE, David , LANG, Yue , XU, Jianfeng
IPC分类号： G10L19/00 , G10L19/02
CPC分类号： G10L19/008 , G10L19/0204
摘要： The invention relates to a method (100) for determining an encoding parameter (ITD) for an audio channel signal (X i ) of a plurality of audio channel signals (X 1 , X 2 ) of a multi-channel audio signal, the method comprising: determining (105) inter channel differences (CD[b]) for at least each frequency sub-band (b) of a subset of frequency subbands, each inter channel difference indicating a phase difference (I PD[b]) or time difference (ITD[b]) between a band-limited signal portion of an audio channel signal and a band-limited signal portion of a reference audio signal in the respective frequency sub-band (b) the inter-channel difference is associated to; determining (107) a first average (ITD mean _p OS ) based on positive values of the inter-channel differences (ICD[b]) and determining a second average (ITD mean_ neg ) based on negative values of the inter-channel differences (ICD[b]); and determining (109) the encoding parameter (ITD) based on the first average and on the second average.
摘要翻译：本发明涉及一种用于确定多声道音频信号的多个音频信道信号（X1，X2）的音频信道信号（Xi）的编码参数（ITD）的方法（100），该方法包括：确定对于频率子带子集的至少每个频率子带（b），每个信道间差异（I PD [b]）或时间差（ITD）的信道差（CD [b]）音频信道信号的频带限制信号部分和各个频率子带（b）中的参考音频信号的频带限制信号部分之间的信道间差分相关联; 基于信道间差异（ICD [b]）的正值确定（107）第一平均值（ITDmean_pOS）并且基于信道间差异的负值（ICD [b]）确定第二平均值（ITDmean_ neg））; 以及基于所述第一平均值和所述第二平均值来确定（109）所述编码参数（ITD）。

8. 发明申请

WO2013149670A1 METHOD FOR PARAMETRIC SPATIAL AUDIO CODING AND DECODING, PARAMETRIC SPATIAL AUDIO CODER AND PARAMETRIC SPATIAL AUDIO DECODER 审中-公开
标题翻译：参考空间音频编码和解码方法，参考空间音频编码器和参考空间音频解码器
公开(公告)号：WO2013149670A1
公开(公告)日：2013-10-10
申请号：PCT/EP2012/056319
申请日：2012-04-05
申请人： HUAWEI TECHNOLOGIES CO., LTD. , VIRETTE, David , LANG, Yue , XU, Jianfeng
发明人： VIRETTE, David , LANG, Yue , XU, Jianfeng
IPC分类号： G10L19/008 , H04S3/00
CPC分类号： G10L19/008 , H04S3/00
摘要： A method for parametric spatial audio coding of a multi-channel audio signal comprising a plurality of audio channel signals is provided, the method comprising: calculating at least two different spatial coding parameters for an audio channel signal of the plurality of audio channel signals, wherein the at least two different spatial coding parameters are of at least two different types of spatial coding parameters and are calculated with regard to a reference audio signal, wherein the reference audio signal is another audio channel signal of the plurality of audio channel signals or a downmix audio signal derived from at least two audio channel signals of the plurality of audio channel signals; selecting at least one spatial coding parameter of the at least two different spatial coding parameters associated with the audio channel signal on the basis of the values of the calculated spatial coding parameters; including a quantized representation of the selected spatial coding parameter into a parameter section (1b) of an audio bitstream (1); and setting a parameter type flag in the parameter section (1b) of the audio bitstream (1) indicating the type of the selected spatial coding parameter being included into the audio bitstream (1).
摘要翻译：提供了一种包括多个音频信道信号的多声道音频信号的参数空间音频编码的方法，所述方法包括：为所述多个音频信道信号的音频信道信号计算至少两个不同的空间编码参数，其中所述至少两个不同的空间编码参数是至少两种不同类型的空间编码参数，并且关于参考音频信号被计算，其中所述参考音频信号是所述多个音频信道信号中的另一个音频信道信号或下混合音频信号从多个音频信道信号的至少两个音频信道信号中得出; 基于所计算的空间编码参数的值，选择与音频信道信号相关联的至少两个不同的空间编码参数中的至少一个空间编码参数; 包括所选择的空间编码参数的量化表示到音频比特流（1）的参数部分（1b）中; 并且在音频比特流（1）的参数部分（1b）中设置参数类型标志，该参数部分指示所包含的音频比特流（1）中所选择的空间编码参数的类型。

9. 发明申请

WO2013120531A1 PARAMETRIC ENCODER FOR ENCODING A MULTI-CHANNEL AUDIO SIGNAL 审中-公开
标题翻译：编码多通道音频信号的参数编码器
公开(公告)号：WO2013120531A1
公开(公告)日：2013-08-22
申请号：PCT/EP2012/052734
申请日：2012-02-17
申请人： HUAWEI TECHNOLOGIES CO., LTD. , LANG, Yue , VIRETTE, David , XU, Jianfeng
发明人： LANG, Yue , VIRETTE, David , XU, Jianfeng
IPC分类号： H04S3/00 , G10L19/00
CPC分类号： G10L19/008 , H04S3/008 , H04S2400/03 , H04S2420/03
摘要： The invention relates to a parametric audio encoder (100) for generating an encoding parameter (ICC) for an audio channel signal (X 1 [b]) of a plurality of audio channel signals (X 1 [b], X 2 [b]) of a multi-channel audio signal, each audio channel signal (X 1 [b], X 2 [b]) having audio channel signal values (X 1 [k], X 2 [k]), the parametric audio encoder (100) comprising a parameter generator (105), the parameter generator (105) being configured - to determine for the audio channel signal (X 1 [b]) of the plurality of audio channel signals a first set of encoding parameters (IPD[b]) from the audio channel signal values (X 1 [k]) of the audio channel signal (X 1 [b]) and reference audio signal values (X 2 [k]) of a reference audio signal (X 2 [b]), wherein the reference audio signal is another audio channel signal (X 2 [b]) of the plurality of audio channel signals or a downmix audio signal derived from at least two audio channel signals of the plurality of multi-channel audio signals, - to determine for the audio channel signal (X1[b]) a first encoding parameter average (IPD mean [i]) based on the first set of encoding parameters (IPD[b]) of the audio channel signal (X 1 [b]), - to determine for the audio channel signal (X 1 [b]) a second encoding parameter average (IPD mean_long_term )based on the first encoding parameter average (IPD mean [i]) of the audio channel sigmean_long_termnal (X 1 [b]) and at least one other first encoding parameter average (IPD mean [i-1]) of the audio channel signal (X 1 [b]), and - to determine the encoding parameter (ICC) based on the first encoding parameter average (IPD mean [i]) of the audio channel signal (X1[b]) and the second encoding parameter average (IPD mean_long_term ) of the audio channel signal (X 1 [b]).
摘要翻译：本发明涉及一种用于为多个音频信道信号（X1 [b]，X2 [b]）的音频信道信号（X1 [b]）生成编码参数（ICC）的参数音频编码器（100）具有音频信道信号值（X1 [k]，X2 [k]）的每个音频信道信号（X1 [b]，X2 [b]），参数音频编码器（100） 105），所述参数发生器（105）被配置为从所述音频信道信号值确定所述多个音频信道信号中的音频信道信号（X1 [b]）第一组编码参数（IPD [b]）（X1 [b]）的音频信号（X1 [k]）和参考音频信号（X2 [b]）的参考音频信号值（X2 [k]），其中参考音频信号是另一声道信号（X2 [b]）或由多个多声道音频信号中的至少两个音频信道信号导出的下混合音频信号，以确定音频通道信号（X1 [b]）基于音频通道信号（X1 [b]）的第一组编码参数（IPD [b]））的第一编码参数平均值（IPDmean [i]），以确定基于音频信道sigmean_long_termnal（X1 [b]）的第一编码参数平均值（IPDmean [i]）和至少一个其他第一编码参数的音频信道信号（X1 [b]）第二编码参数平均值（IPDmean_long_term）（X1 [b]）的平均值（IPDmean [i-1]），以及 - 基于音频信道信号的第一编码参数平均值（IPDmean [i]）来确定编码参数（ICC） X1 [b]）和音频通道信号（X1 [b]）的第二编码参数平均值（IPDmean_long_term）。

10. 发明申请

WO2012045203A1 METHOD AND APPARATUS FOR ENCODING/DECODING MULTICHANNEL AUDIO SIGNAL 审中-公开
标题翻译：编码/解码多通道音频信号的方法和装置
公开(公告)号：WO2012045203A1
公开(公告)日：2012-04-12
申请号：PCT/CN2010/077571
申请日：2010-10-05
申请人： HUAWEI TECHNOLOGIES CO., LTD. , VIRETTE, David , LANG, Yue , XU, Jianfeng
发明人： VIRETTE, David , LANG, Yue , XU, Jianfeng
IPC分类号： G10L19/00 , H04S3/02
CPC分类号： G10L19/008 , G10L25/06
摘要： A method and apparatus for decoding a multichannel audio signal is provided, wherein the method comprises the steps of receiving a downmix audio signal (SD) and an interchannel cross correlation parameter (ICCi); deriving (S42) an interchannel phase difference parameter (IPDi) from the received interchannel cross correlation parameter (ICCi); and calculating (S43) a decoded multichannel audio signal for the received downmix audio signal (SD) depending on the derived interchannel phase difference parameter (IPDi).
摘要翻译：提供一种用于对多声道音频信号进行解码的方法和装置，其中该方法包括以下步骤：接收下混合音频信号（SD）和通道间相互关联参数（ICCi）; 从所接收的信道间相互关联参数（ICCi）中导出（S42）信道间相位差参数（IPDi）; 以及根据导出的信道间相位差参数（IPDi），计算（S43）所接收的下混音频信号（SD）的解码多声道音频信号。

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