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1. 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。

2. 发明申请

WO2010104299A2 AN APPARATUS FOR PROCESSING AN AUDIO SIGNAL AND METHOD THEREOF 审中-公开
标题翻译：一种处理音频信号的装置及其方法
公开(公告)号：WO2010104299A2
公开(公告)日：2010-09-16
申请号：PCT/KR2010/001429
申请日：2010-03-08
申请人： LG ELECTRONICS INC. , OH, Hyen-O , FAVROT, Alex , FALLER, Christof , LEE, Myung Hoon , MOON, Jong Ha
发明人： OH, Hyen-O , FAVROT, Alex , FALLER, Christof , LEE, Myung Hoon , MOON, Jong Ha
IPC分类号： H03G5/16 , H04R3/04
CPC分类号： G10K11/1784 , G10K11/178 , G10L21/0208 , H03G1/02 , H03G3/001 , H03G5/165 , H03G7/002 , H03G9/005 , H03G9/025
摘要： A method of processing an audio signal is disclosed. The present invention includes receiving, by an audio processing apparatus, an input signal; receiving user gain input; generating a linear gain factor and a non-linear gain factor using the user gain input; modifying the non-linear gain factor using absolute threshold of hearing and power of the input signal to generate a modified non-linear gain factor; and, applying the linear gain factor and the modified non-linear gain factor to the audio signal.
摘要翻译：公开了一种处理音频信号的方法。本发明包括由音频处理装置接收输入信号; 接收用户增益输入; 使用用户增益输入产生线性增益因子和非线性增益因子; 使用输入信号的听力的绝对阈值和功率修改非线性增益因子以生成修改的非线性增益因子; 并且将线性增益因子和修正的非线性增益因子应用于音频信号。

3. 发明申请

WO2009092522A1 APPARATUS AND METHOD FOR COMPUTING CONTROL INFORMATION FOR AN ECHO SUPPRESSION FILTER AND APPARATUS AND METHOD FOR COMPUTING A DELAY VALUE 审中-公开
标题翻译：用于计算ECHO抑制过滤器的控制信息的装置和方法以及计算延迟值的装置和方法
公开(公告)号：WO2009092522A1
公开(公告)日：2009-07-30
申请号：PCT/EP2009/000123
申请日：2009-01-12
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , KÜCH, Fabian , KALLINGER, Markus , FALLER, Christof , FAVROT, Alexis
发明人： KÜCH, Fabian , KALLINGER, Markus , FALLER, Christof , FAVROT, Alexis
IPC分类号： H04M9/08
CPC分类号： H04M9/082
摘要： An embodiment of an apparatus (200) for computing control information for a suppression filter (210) for filtering a second audio signal to suppress an echo based on a first audio signal includes a computation means (220) having a value determination means (230) for determining at least one energy-related value for a band-pass signal of at least two temporally successive data blocks of at least one signal of a group of signals. The computation means (220) further includes a mean value determination means (250) for determining at least one mean value of the at least one determined energy-related value for the band-pass signal. The computation means (220) further includes a modification means (260) for modifying the at least one energy-related value for the band-pass signal on the basis of the determined mean value for the band-pass signal. The computation means (220) ' further includes a control information computation means (270) for computing the control information for the suppression filter (210) on the basis of the at least one modified energy-related value.
摘要翻译：用于计算用于滤波第二音频信号以抑制基于第一音频信号的回波的抑制滤波器（210）的控制信息的装置（200）的实施例包括具有值确定装置（230）的计算装置（220）用于为一组信号的至少一个信号的至少两个时间上连续的数据块的带通信号确定至少一个能量相关值。计算装置（220）还包括一个平均值确定装置（250），用于确定所述至少一个确定的带通信号的能量相关值的平均值。计算装置（220）还包括修改装置（260），用于根据确定的带通信号的平均值修改带通信号的至少一个能量相关值。计算装置（220）还包括控制信息计算装置（270），用于根据至少一个经修改的能量相关值计算抑制滤波器（210）的控制信息。

4. 发明申请

WO2009031870A1 A METHOD AND AN APPARATUS OF DECODING AN AUDIO SIGNAL 审中-公开
标题翻译：一种解码音频信号的方法和装置
公开(公告)号：WO2009031870A1
公开(公告)日：2009-03-12
申请号：PCT/KR2008/005291
申请日：2008-09-08
申请人： LG ELECTRONICS INC. , OH, Hyun O , LEE, Myung Hoon , JUNG, Yang Won , FALLER, Christof
发明人： OH, Hyun O , LEE, Myung Hoon , JUNG, Yang Won , FALLER, Christof
IPC分类号： G10L19/00
CPC分类号： G10L21/0272 , G10L19/008 , G10L21/00
摘要： A method of decoding an audio signal is disclosed, The present invention includes the steps of receiving the audio signal having a plurality of channel signals including an ambient component signal and a source component signal, extracting the ambient component signal and the source component signal of each of the channels based on correlation between the channel signals, modifying the ambient component signal using surround effect information, and generating the audio signal including a plurality of channels using the modified ambient component signal and the source component signal. Accordingly, in an apparatus for decoding an audio signal and method thereof according to the present invention, an ambient component signal is extracted and modified based on correlation and the modified ambient and source component signals are outputted using different signal output units, respectively. Therefore, the present invention enhances a stereo effect of the audio signal. And, a signal output unit for outputting a ambient component signal is arranged to have an output direction different from that of another signal output unit for outputting a source component signal, whereby a listener can be provided with an audio signal of which ambient sound is enhanced.
摘要翻译：公开了一种解码音频信号的方法，本发明包括以下步骤：接收具有多个信道信号的音频信号，包括环境分量信号和源分量信号，提取每个信号的环境分量信号和源分量信号基于信道信号之间的相关性，使用环绕效果信息修改环境分量信号，以及使用修改的环境分量信号和源分量信号来生成包括多个信道的音频信号。因此，在根据本发明的用于解码音频信号的装置及其方法中，基于相关性提取和修改环境分量信号，并且分别使用不同的信号输出单元输出修改的环境和源分量信号。因此，本发明增强了音频信号的立体效果。并且，用于输出环境分量信号的信号输出单元被布置成具有与用于输出源分量信号的另一信号输出单元的输出方向不同的输出方向，从而可以向收听者提供其环境声音被增强的音频信号。

5. 发明申请

WO2006060278A1 SYNCHRONIZING PARAMETRIC CODING OF SPATIAL AUDIO WITH EXTERNALLY PROVIDED DOWNMIX 审中-公开
标题翻译：同步提供外部空间音频的参数编码同步
公开(公告)号：WO2006060278A1
公开(公告)日：2006-06-08
申请号：PCT/US2005/042771
申请日：2005-11-22
申请人： AGERE SYSTEMS INC. , FALLER, Christof
发明人： FALLER, Christof
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： Embodiments of the present invention are directed to a binaural cue coding (BCC) scheme in which an externally provided audio signal (e.g., a studio engineering audio signal) is transmitted, along with derived cue codes, to a receiver instead of an automatically downmixed audio signal. The cue codes are (adaptively) synchronized with the externally provided audio signal to compensate for time lags (and changes in those time lags) between the externally downmixed audio signal and the multi-channel signal used to generate the cue codes. If the receiver is a legacy receiver, then the studio engineered audio signal will typically provide a higher-quality playback than would be provided by the automatically downmixed audio signal. If the receiver is a BCC-capable receiver, then the synchronization of the cue codes with the externally provided audio signal will typically improve the quality of the synthesized playback.
摘要翻译：本发明的实施例涉及一种双耳提示编码（BCC）方案，其中将外部提供的音频信号（例如，工作室工程音频信号）连同导出的提示码一起发送到接收机而不是自动下混音频信号。提示码与外部提供的音频信号（自适应地）同步，以补偿外部下混音频信号与用于生成提示码的多声道信号之间的时间滞后（和那些时间滞后的变化）。如果接收机是传统接收机，则工作室设计的音频信号通常将提供比由自动缩混音频信号提供的更高质量的播放。如果接收机是具有BCC能力的接收机，则提示码与外部提供的音频信号的同步通常将改善合成回放的质量。

6. 发明申请

WO2006045371A1 INDIVIDUAL CHANNEL TEMPORAL ENVELOPE SHAPING FOR BINAURAL CUE CODING SCHEMES AND THE LIKE 审中-公开
标题翻译：个性通道时间包装形式
公开(公告)号：WO2006045371A1
公开(公告)日：2006-05-04
申请号：PCT/EP2005/009618
申请日：2005-09-07
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , AGERE SYSTEMS INC. , ALLAMANCHE, Eric , DISCH, Sascha , FALLER, Christof , HERRE, Juergen
发明人： ALLAMANCHE, Eric , DISCH, Sascha , FALLER, Christof , HERRE, Juergen
IPC分类号： G10L19/02 , G10L19/00
CPC分类号： G10L19/008
摘要： At an audio encoder, cue codes are generated for one or more audio channels, wherein an envelope cue code is generated by characterizing a temporal envelope in an audio channel. At an audio decoder, E transmitted audio channel(s) are decoded to generate C playback audio channels, where C>=Eo1. Received cue codes include an envelope cue code corresponding to a characterized temporal envelope of an audio channel corresponding to the transmitted channel(s). One or more transmitted channel(s) are upmixed to generate one or more upmixed channels. One or more playback channels are synthesized by applying the cue codes to the one or more upmixedchannels, wherein the envelope cue code is applied to an upmixed channel or a synthesized signal to adjust a temporal envelope of the synthesized signal based on the characterized temporal envelope such that the adjusted temporal envelope substantially matches the characterized temporal envelope.
摘要翻译：在音频编码器中，为一个或多个音频通道生成提示码，其中通过表征音频通道中的时间包络来产生包络线索码。在音频解码器中，对E个发送的音频信道进行解码以产生C个回放音频信道，其中C> = Eo1。接收的提示码包括与对应于所发送的频道的音频信道的特征化时间包络对应的信封提示码。一个或多个传输的信道被混合以产生一个或多个上混频道。通过将提示码应用于一个或多个上混合信道来合成一个或多个播放频道，其中，包络提示码被应用于上混合信道或合成信号，以基于表征的时间包络来调整合成信号的时间包络，调整后的时间包络基本上与特征化的时间包络相匹配。

7. 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。

8. 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）。

9. 发明申请

WO2011104146A1 APPARATUS FOR GENERATING AN ENHANCED DOWNMIX SIGNAL, METHOD FOR GENERATING AN ENHANCED DOWNMIX SIGNAL AND COMPUTER PROGRAM 审中-公开
标题翻译：用于产生增强的下行信号的装置，用于产生增强的下行信号和计算机程序的方法
公开(公告)号：WO2011104146A1
公开(公告)日：2011-09-01
申请号：PCT/EP2011/052246
申请日：2011-02-15
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , KÜCH, Fabian , HERRE, Jürgen , FALLER, Christof , TOURNERY, Christophe
发明人： KÜCH, Fabian , HERRE, Jürgen , FALLER, Christof , TOURNERY, Christophe
IPC分类号： G10L19/00
CPC分类号： H04R5/00 , G10L19/008 , G10L19/265 , G10L21/02
摘要： An apparatus for generating an enhanced downmix signal on the basis of a multi-channel microphone signal comprises a spatial analyzer configured to compute a set of spatial cue parameters comprising a direction information describing a direction-of-arrival of a direct sound, a direct sound power information and a diffuse sound power information on the basis of the multi-channel microphone signal. The apparatus also comprises a filter calculator for calculating enhancement filter parameters in dependence on the direction information describing the direction-of-arrival of the direct sound, in dependence on the direct sound power information and in dependence on the diffuse sound power information. The apparatus also comprises a filter for filtering the microphone signal, or a signal derived therefrom, using the enhancement filter parameters, to obtain the enhanced downmix signal.
摘要翻译：一种用于基于多声道麦克风信号产生增强的下混信号的装置包括：空间分析器，被配置为计算一组空间提示参数，所述空间提示参数包括描述直接声音的到达方向的方向信息，直接声音功率信息和基于多声道麦克风信号的漫射声功率信息。该装置还包括一个滤波器计算器，用于根据直接声功率信息和依赖于扩散声功率信息，根据描述直接声音到达方向的方向信息计算增强滤波器参数。该装置还包括用于过滤麦克风信号的滤波器或使用增强滤波器参数从其导出的信号，以获得增强的降混信号。

10. 发明申请

WO2010104300A2 AN APPARATUS FOR PROCESSING AN AUDIO SIGNAL AND METHOD THEREOF 审中-公开
标题翻译：一种用于处理音频信号的装置及其方法
公开(公告)号：WO2010104300A2
公开(公告)日：2010-09-16
申请号：PCT/KR2010001430
申请日：2010-03-08
申请人： LG ELECTRONICS INC , OH HYEN-O , FAVROT ALEX , FALLER CHRISTOF , LEE MYUNG HOON , MOON JONG HA
发明人： OH HYEN-O , FAVROT ALEX , FALLER CHRISTOF , LEE MYUNG HOON , MOON JONG HA
IPC分类号： H03G5/16 , H04R3/04
CPC分类号： G10K11/1784 , G10K11/178 , G10L21/0208 , H03G1/02 , H03G3/001 , H03G5/165 , H03G7/002 , H03G9/005 , H03G9/025
摘要： A method of processing an audio signal is disclosed. The present invention includes receiving, by an audio processing apparatus, an input signal; estimating indicator function using a signal power of the input signal; obtaining an adapted filter using the indicator function and an equalization filter; and, generating an output signal by applying the adapted filter to the input signal.
摘要翻译：公开了一种处理音频信号的方法。本发明包括由音频处理装置接收输入信号; 使用输入信号的信号功率来估计指标函数; 使用所述指示器功能获得适配滤波器和均衡滤波器; 并且通过将适配的滤波器应用于输入信号来产生输出信号。

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