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41. 发明公开

EP3103269A1 AUDIO SIGNAL PROCESSING DEVICE AND METHOD FOR REPRODUCING A BINAURAL SIGNAL 有权
标题翻译：维多利亚州VERFAHREN ZUR WIEDERGABE EINES BINAURALEN SIGNALS TONSIGNALVERARBEITUNGSVORRICHTUNG
公开(公告)号：EP3103269A1
公开(公告)日：2016-12-14
申请号：EP14796532.1
申请日：2014-11-13
申请人： Huawei Technologies Co., Ltd
发明人： HELWANI, Karim , GROSCHE, Peter , LANG, Yue
IPC分类号： H04S7/00
CPC分类号： H04S7/303 , G06F3/012 , H04R5/02 , H04R5/04 , H04R2499/11 , H04S3/00 , H04S3/008 , H04S5/005 , H04S7/00 , H04S7/30 , H04S7/305 , H04S2400/01 , H04S2420/01
摘要： An audio signal processing device for generating a plurality of output signals for a plurality of loudspeakers from an input audio signal comprises a driving function determining unit adapted to determined driving functions of a plurality of loudspeakers for generating a virtual left binaural signal source and a virtual right binaural signal source based upon a position and a directivity of the virtual left binaural signal source, a position and a directivity of the virtual right binaural signal source and positions of the plurality of loudspeakers. Moreover, it comprises a filtering unit adapted to filter a left binaural signal and a right binaural signal using the driving functions of the plurality of loudspeakers resulting in the plurality of output signals. The left binaural signal and the right binaural signal constitute the input audio signal or are derived there from.
摘要翻译：一种用于从输入音频信号产生多个扬声器的多个输出信号的音频信号处理装置包括：驱动功能确定单元，适于确定用于产生虚拟左双耳信号源的多个扬声器的驱动功能和虚拟右基于虚拟左双耳信号源的位置和方向性，虚拟右双耳信号源的位置和方向性以及多个扬声器的位置的双耳信号源。此外，它包括滤波单元，其适于使用导致多个输出信号的多个扬声器的驱动功能来滤波左双耳信号和右双耳信号。左双耳信号和右双耳信号构成输入音频信号或从中导出。

42. 发明授权

EP2612322B1 METHOD AND DEVICE FOR DECODING A MULTICHANNEL AUDIO SIGNAL 有权
标题翻译：方法和设备，用于解码MEHRKANALTONSIGNALS
公开(公告)号：EP2612322B1
公开(公告)日：2016-05-11
申请号：EP10858033.3
申请日：2010-10-05
申请人： Huawei Technologies Co., Ltd.
发明人： VIRETTE, David , LANG, Yue , XU, Jianfeng
IPC分类号： G10L19/008 , H04S3/02
CPC分类号： G10L19/008 , G10L25/06

43. 发明授权

EP2722845B1 METHOD AND APPARATUS FOR GENERATING DOWNMIX SIGNAL 有权
标题翻译：方法和装置DOWN GENERATING的混合信号
公开(公告)号：EP2722845B1
公开(公告)日：2016-02-10
申请号：EP12834659.0
申请日：2012-09-27
申请人： Huawei Technologies Co., Ltd.
发明人： WU, Wenhai , MIAO, Lei , LANG, Yue , VIRETTE, David
IPC分类号： G10L19/008 , G10L19/02
CPC分类号： H04S3/02 , G10L19/008 , G10L19/02

44. 发明授权

EP2612321B1 DEVICE AND METHOD FOR POSTPROCESSING DECODED MULTI-CHANNEL AUDIO SIGNAL OR DECODED STEREO SIGNAL 有权
标题翻译： VORRICHTUNG UND VERFAHREN ZUR NACHBEARBEITUNG DECODIERTER MEHRKANAL-TONSIGNALE ODER DECODIERTER STEREOSIGNALE
公开(公告)号：EP2612321B1
公开(公告)日：2016-01-06
申请号：EP10857661.2
申请日：2010-09-28
申请人： Huawei Technologies Co., Ltd.
发明人： LANG, Yue , VIRETTE, David , MIAO, Lei , WU, Wenhai
IPC分类号： G10L19/008 , H01S1/00 , H04S5/00 , H04S3/00 , G10L21/0364
CPC分类号： G10L19/008 , G10L21/0364
摘要： According to the invention, a device for post-processing at least one channel signal of a plurality of channel signals of a multi-channel signal is described, the at least one channel signal being generated from a decoded downmix signal by a low-bit-rate audio coding/decoding system, the device comprising: a receiver 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 post-processor for post-processing the at least one channel signal based on the time envelope of the decoded downmix signal weighted by a respective weighting factor and in dependence on the classification indication and the interchannel time difference.
摘要翻译：根据本发明，描述了一种用于后处理多信道信号的多个信道信号的至少一个信道信号的装置，所述至少一个信道信号是通过低比特率信号从解码的下混信号产生的，该装置包括：接收器，用于接收从解码的下混合信号产生的至少一个信道信号，解码的下混合信号的时间包络，信道信号和下混合信号之间的信道间时间差，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，用于基于由相应加权因子加权的解码缩混信号的时间包并且根据分类指示和通道间时间差，对至少一个信道信号进行后处理。

45. 发明授权

EP2214166B1 FIXED CODE BOOK SEARCHING METHOD AND SEARCHER 有权
标题翻译：搜索方法和搜索引擎具有扎实CODIERBUCH
公开(公告)号：EP2214166B1
公开(公告)日：2015-09-30
申请号：EP08857528.7
申请日：2008-11-04
申请人： Huawei Technologies Co., Ltd.
发明人： ZHANG, Dejun , ZHANG, Liang , LI, Lixiong , WANG, Tinghong , LANG, Yue , WU, Wenhai
IPC分类号： G10L19/107 , G10L19/10
CPC分类号： G10L19/10 , G10L19/107
摘要： A fixed codebook search method includes: initializing a counter; searching for pulses and calculating the value of a cost function Qk; initializing the counter if the Qk value increases; increasing the value of the counter if the Qk value does not increase; judging whether the value of the counter is greater than the threshold value; continuing the search process if the value of the counter is not greater than the threshold value; and ending the whole search process if the value of the counter is greater than the threshold value. A searcher includes: a pulse searching unit; an identifying unit, configured to: identify the initial state, and set the state flag to a non-initial state when the Qk value increases; and a judging unit, configured to: judge whether the identifying unit indicates the initial state, and end the whole search process if determining that the identifying unit indicates the initial state. The present invention reduces the search count and improves the search efficiency.

46. 发明公开

EP2834813A1 MULTI-CHANNEL AUDIO ENCODER AND METHOD FOR ENCODING A MULTI-CHANNEL AUDIO SIGNAL 有权
标题翻译：多声道音频编码器和方法进行编码多声道音信号
公开(公告)号：EP2834813A1
公开(公告)日：2015-02-11
申请号：EP12713148.0
申请日：2012-04-05
申请人： Huawei Technologies Co., Ltd
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.

47. 发明公开

EP2823650A1 AUDIO RENDERING SYSTEM 有权
标题翻译：音频播放系统
公开(公告)号：EP2823650A1
公开(公告)日：2015-01-14
申请号：EP12753717.3
申请日：2012-08-29
申请人： Huawei Technologies Co., Ltd
发明人： LANG, Yue , VIRETTE, David
IPC分类号： H04S7/00
摘要： The invention relates to an audio rendering system(100) for audio rendering room acoustics, comprising: a plurality of loudspeakers (101); a mobile device (105) comprising at least two microphones (107), the mobile device (105) being located at a room position of a user (109) using the mobile device (105); and a control device (103) coupled to the plurality of loudspeakers (101) and coupled to the mobile device (105), wherein the control device (103) is configured to calibrate the audio rendering system (100) based on the room position of the user (109) and on room positions of the loudspeakers(101) by evaluating information of the at least two microphones (107) of the mobile device (105).

48. 发明公开

EP2702587A1 METHOD FOR INTER-CHANNEL DIFFERENCE ESTIMATION AND SPATIAL AUDIO CODING DEVICE 有权
标题翻译： PROCESS FOR之间的评价及空间通道中的差异TONCODIERUNGSVORRICHTUNG
公开(公告)号：EP2702587A1
公开(公告)日：2014-03-05
申请号：EP12712126.7
申请日：2012-04-05
申请人： Huawei Technologies Co., Ltd
发明人： LANG, Yue , VIRETTE, David , XU, Jianfeng
IPC分类号： G10L19/008 , H04S3/00
CPC分类号： G10L19/008 , H04S3/008 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： Methods and devices for a low complex inter-channel difference estimation are provided. A method for the estimation of inter-channel differences, ICD, comprises applying a transformation from a time domain to a frequency domain to a plurality of audio channel signals, calculating a plurality of ICD values for the ICDs between at least one of the plurality of audio channel signals and a reference audio channel signal over a predetermined frequency range, each ICD value being calculated over a portion of the predetermined frequency range, calculating, for each of the plurality of ICD values, a weighted ICD value by multiplying each of the plurality of ICD values with a corresponding frequency-dependent weighting factor, and calculating an ICD range value for the predetermined frequency range by adding the plurality of weighted ICD values.

49. 发明公开

EP2612321A1 DEVICE AND METHOD FOR POSTPROCESSING DECODED MULTI-CHANNEL AUDIO SIGNAL OR DECODED STEREO SIGNAL 有权
标题翻译： DEVICE AND METHOD FOR POST解码多声道音频信号或解码立体声信号
公开(公告)号：EP2612321A1
公开(公告)日：2013-07-10
申请号：EP10857661.2
申请日：2010-09-28
申请人： Huawei Technologies Co., Ltd.
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： According to the invention, a device for post-processing at least one channel signal of a plurality of channel signals of a multi-channel signal is described, the at least one channel signal being generated from a decoded downmix signal by a low-bit-rate audio coding/decoding system, the device comprising: a receiver 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 post-processor for post-processing the at least one channel signal based on the time envelope of the decoded downmix signal weighted by a respective weighting factor and in dependence on the classification indication and the interchannel time difference.

50. 发明公开

EP2429218A1 DETECTION SIGNAL DELAY METHOD, DETECTION DEVICE AND ENCODER 审中-公开
标题翻译：检测信号延迟方法，检测装置和编码器
公开(公告)号：EP2429218A1
公开(公告)日：2012-03-14
申请号：EP09844241.1
申请日：2009-05-07
申请人： Huawei Technologies Co., Ltd.
发明人： WU, Wenhai , MIAO, Lei , LANG, Yue , HU, Chen , LIU, Zexin , ZHANG, Qing
IPC分类号： H04S1/00
CPC分类号： H04S1/007 , H04S2420/03
摘要： A signal delay detection method, a detection apparatus, and a coder are disclosed to improve accuracy of detecting the signal delay. The method includes: obtaining a first cumulative cross-correlation function according to cross-correlation functions between channel signals; determining a first delay between the channel signals corresponding to the first cumulative cross-correlation function; adjusting a second cumulative cross-correlation function according to a relationship between the first delay and a second delay that exist between the channel signals, where the second delay is obtained at time of adjusting the second cumulative cross-correlation function and an initial value of the second delay is determined according to an initial value of a second weighting coefficient of the second cumulative cross-correlation function; and determining the second delay corresponding to the adjusted second cumulative cross-correlation function as a delay detected between the channel signals.
摘要翻译：公开了信号延迟检测方法，检测装置和编码器以提高检测信号延迟的准确度。该方法包括：根据信道信号之间的互相关函数获得第一累积互相关函数; 确定对应于第一累积互相关函数的信道信号之间的第一延迟; 根据存在于所述通道信号之间的所述第一延迟与第二延迟之间的关系调整第二累积互相关函数，其中所述第二延迟是在调整所述第二累积互相关函数时获得的，并且所述第二累积互相关函数的初始值根据所述第二累积互相关函数的第二加权系数的初始值确定第二延迟; 以及将对应于调整后的第二累积互相关函数的第二延迟确定为在信道信号之间检测到的延迟。

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