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    • 5. 发明申请
    • AN AUDIO SIGNAL PROCESSING APPARATUS AND METHOD
    • 一种音频信号处理装置和方法
    • WO2017097324A1
    • 2017-06-15
    • PCT/EP2015/078805
    • 2015-12-07
    • HUAWEI TECHNOLOGIES CO., LTD.PANG, LiyunGROSCHE, Peter
    • PANG, LiyunGROSCHE, PeterFALLER, ChristofFAVROT, Alexis
    • H04S1/00
    • H04S1/005H04S2400/11H04S2420/01
    • The invention relates to an audio signal processing apparatus (100) for processing an input audio (101) signal to be transmitted to a listener in such a way that the listener perceives the input audio signal (101) to come from a virtual target position defined by an azimuth angle and an elevation angle relative to the listener, the audio signal processing apparatus (100) comprising a memory (103) 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, wherein the plurality of reference positions lie in a a two-dimensional plane, a determiner(105) 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 (107) configured to filter the input audio signal (101) on the basis of the determined pair of left ear and right ear transfer functions and an adjustment function (109) configured to adjust a delay between the left ear transfer function and the right ear transfer function of the determined pair of left ear and right ear transfer functions and a frequency dependence of the left ear transfer function and the right ear transfer function of the determined pair of left ear and right ear transfer functions as a function of the azimuth angle and/or the elevation angle of the virtual target position in order to obtain a left ear output audio signal (111a) and a right ear output audio signal (111b).
    • 本发明涉及一种音频信号处理设备(100),用于以收听者感知输入音频信号(101)的方式处理要发送给收听者的输入音频(101)信号, 来自由相对于收听者的方位角和仰角限定的虚拟目标位置,所述音频信号处理设备(100)包括存储器(103),所述存储器被配置为存储一组预定义的左耳和右耳转移 函数,其针对相对于收听者的多个参考位置而预定义,其中所述多个参考位置位于二维平面中;确定器(105),其被配置为确定在所述多个参考位置上的一对左耳和右耳传递函数 基于虚拟目标位置的方位角和仰角的一组预定义的左耳和右耳传递函数的预定义对,以及调整过滤器(107),其被配置为过滤 基于确定的一对左耳和右耳传递函数来放置音频信号(101);以及调整函数(109),其被配置为调整确定的一对左耳和右耳传递函数的左耳传递函数和右耳传递函数之间的延迟 左耳和右耳传递函数以及所确定的一对左耳和右耳传递函数的左耳传递函数和右耳传递函数的频率相关性作为方位角和/或仰角传递函数的方位角和/或仰角的函数 虚拟目标位置以便获得左耳输出音频信号(111a)和右耳输出音频信号(111b)。
    • 9. 发明申请
    • SIGNAL PROCESSING APPARATUS, METHOD AND COMPUTER PROGRAM FOR DEREVERBERATING A NUMBER OF INPUT AUDIO SIGNALS
    • 信号处理设备,方法和计算机程序,用于数字输入音频信号
    • WO2015165539A1
    • 2015-11-05
    • PCT/EP2014/058913
    • 2014-04-30
    • HUAWEI TECHNOLOGIES CO., LTD.HELWANI, KarimPANG, Liyun
    • HELWANI, KarimPANG, Liyun
    • G10L21/0208
    • G10L21/0232G10L19/008G10L21/0208G10L2021/02082
    • The invention relates to a signal processing apparatus (100) for dereverberating a number of input audio signals, the signal processing apparatus (100) comprising a transformer (101) being configured to transform the number of input audio signals into a transformed domain to obtain input transformed coefficients, the input transformed coefficients being arranged to form an input transformed coefficient matrix, a filter coefficient determiner (103) being configured to determine filter coefficients upon the basis of eigenvalues resulting from the decomposition of an input auto-coherence matrix, the filter coefficients being arranged to form a filter coefficient matrix, a filter (105) being configured to convolve input transformed coefficients of the input transformed coefficient matrix by filter coefficients of the filter coefficient matrix to obtain output transformed coefficients, the output transformed coefficients being arranged to form an output transformed coefficient matrix, and an inverse transformer (107) being configured to inversely transform the output transformed coefficient matrix from the transformed domain to obtain a number of output audio signals.
    • 本发明涉及一种用于对多个输入音频信号进行去混响的信号处理设备(100),该信号处理设备(100)包括变压器(101),其被配置为将输入音频信号的数量变换成变换域以获得输入 输入变换系数被布置以形成输入变换系数矩阵,滤波器系数确定器(103)被配置为基于由输入自相关矩阵的分解得到的特征值来确定滤波器系数,滤波器系数 布置成形成滤波器系数矩阵,滤波器(105)被配置为通过滤波器系数矩阵的滤波器系数来卷积输入变换系数矩阵的输入变换系数,以获得输出变换系数,输出变换系数被布置成形成 输出变换系数矩阵,a n逆变换器(107)被配置为从变换的域逆变换输出变换系数矩阵以获得输出音频信号的数量。