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    METHOD FOR DETERMINING A STEREO SIGNAL
    2.
    发明公开
    METHOD FOR DETERMINING A STEREO SIGNAL 有权
    VERFAHREN ZUR BESTIMMUNG EINES STEREOSIGNALS

    公开(公告)号：EP2941770A1

    公开(公告)日：2015-11-11

    申请号：EP13701210.0

    申请日：2013-01-04

    申请人： Huawei Technologies Co., Ltd.

    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： 一种用于确定输出立体声信号的方法，包括确定第一差分信号并确定第二差分信号; 基于所述第一差分信号确定第一功率谱，并基于所述第二差分信号确定第二功率谱; 确定作为所述第一功率谱和所述第二功率谱的函数的第一加权函数和第二加权函数; 并且对第一信号进行滤波，第一信号表示第一输入音频信道信号和第二输入音频信道信号的第一组合，并且对表示第一输入音频信道信号和第二输入音频信道的第二组合的第二信号进行滤波 信号。

    AUDIO SIGNAL PROCESSING STAGE, AUDIO SIGNAL PROCESSING APPARATUS AND AUDIO SIGNAL PROCESSING METHOD
    5.
    发明公开
    AUDIO SIGNAL PROCESSING STAGE, AUDIO SIGNAL PROCESSING APPARATUS AND AUDIO SIGNAL PROCESSING METHOD 审中-公开

    公开(公告)号：EP3453187A1

    公开(公告)日：2019-03-13

    申请号：EP16727350.7

    申请日：2016-05-25

    申请人： Huawei Technologies Co., Ltd.

    发明人： FALLER, Christof ,  FAVROT, Alexis ,  GROSCHE, Peter ,  POLLOW, Martin ,  GEIGER, Jürgen

    IPC分类号： H04R3/04 ,  H04R3/00

    摘要： An input audio signal (101) is separated into input audio signal components (X(k,b)). A set of two or more band branches (105e) provides output audio signal components (Y(k,b)). The set of band branches (105e) comprises one or more compressor branches Each compressor branch compresses a respective input audio signal component (X(k,b)) into a respective output audio signal component (Y(k,b)). A summed audio signal (y(t)) is generated by summing the output audio signal components (Y(k,b)). A residual audio signal (v(t)) is a difference between the input audio signal (101) and the summed audio signal (y(t)) A virtual bass signal (w(t)) comprises one or more harmonics of the residual audio signal (v(t)). An output audio signal (103) is generated by summing the summed audio signal (y(t)) and the virtual bass signal (w(t)).

    AN AUDIO SIGNAL PROCESSING APPARATUS AND METHOD
    7.
    发明公开
    AN AUDIO SIGNAL PROCESSING APPARATUS AND METHOD 审中-公开

    公开(公告)号：EP3375207A1

    公开(公告)日：2018-09-19

    申请号：EP15804837.1

    申请日：2015-12-07

    申请人： Huawei Technologies Co., Ltd.

    发明人： PANG, Liyun ,  GROSCHE, Peter ,  FALLER, Christof ,  FAVROT, Alexis

    IPC分类号： H04S1/00

    CPC分类号： H04S7/303 ,  H04S1/005 ,  H04S2400/11 ,  H04S2420/01

    摘要： An audio signal processing apparatus, comprising a memory configured to store a set of pairs of predefined left ear and right ear transfer functions, which are predefined for a plurality of reference positions relative to the listener, a processor configured to determine a pair of left ear and right ear transfer functions on the basis of the set of predefined pairs of predefined left ear and right ear transfer functions for the azimuth angle and the elevation angle of the virtual target position and an adjustment filter configured to filter the input audio signal on the basis of the determined pair of left ear and right ear transfer functions and an adjustment function configured to adjust a delay between the left ear transfer function and the right ear transfer function to obtain a left ear output audio signal and a right ear output audio signal.

    AN APPARATUS AND A METHOD FOR MANIPULATING AN INPUT AUDIO SIGNAL
    9.
    发明公开
    AN APPARATUS AND A METHOD FOR MANIPULATING AN INPUT AUDIO SIGNAL 审中-公开
    VORRICHTUNG UND VERFAHREN ZUR操作系列EINGABETONSIGNALS

    公开(公告)号：EP3155828A1

    公开(公告)日：2017-04-19

    申请号：EP14741891.7

    申请日：2014-07-22

    申请人： Huawei Technologies Co., Ltd.

    发明人： FALLER, Christof ,  FAVROT, Alexis ,  PANG, Liyun ,  GROSCHE, Peter ,  LANG, Yue

    IPC分类号： H04S7/00

    CPC分类号： H04S7/302 ,  H04R3/04 ,  H04S3/008 ,  H04S2400/01 ,  H04S2400/11 ,  H04S2420/01 ,  H04S2420/03

    摘要： The disclosure relates to an apparatus for manipulating an input audio signal associated to a spatial audio source within a spatial audio scenario, wherein the spatial audio source has a certain distance to a listener within the spatial audio scenario. The apparatus comprises an exciter adapted to manipulate the input audio signal to obtain an output audio signal, and a controller adapted to control parameters of the exciter for manipulating the input audio signal based on the certain distance.

    摘要翻译： 本公开涉及一种用于在空间音频场景中操纵与空间音频源相关联的输入音频信号的装置，其中所述空间音频源与所述空间音频场景内的收听者有一定距离。 该装置包括适于操纵输入音频信号以获得输出音频信号的激励器，以及适用于控制激励器参数的控制器，用于基于一定距离来操纵输入音频信号。