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    • 1. 发明申请
    • METHOD AND APPARATUS FOR EXTRACTING AND CHANGING THE REVERBERANT CONTENT OF AN INPUT SIGNAL
    • 提取和更改输入信号的复原内容的方法和装置
    • WO2008034221A1
    • 2008-03-27
    • PCT/CA2007/001635
    • 2007-09-17
    • SOULODRE, Gilbert Arthur Joseph
    • SOULODRE, Gilbert Arthur Joseph
    • G10K15/00G10K15/08G10L11/00G10L21/02H04S3/00H04S5/02
    • H04S5/005G01H7/00G10L2021/02082H04R29/00H04S7/301
    • A method and apparatus for extracting and changing the reverberant content of an input signal is provided. The method of estimating an impulse response for a reverberant system includes sampling a signal from a reverberant system, having an impulse response, into a sequence of blocks, for each block of the sequence, determining a magnitude in dependence upon a magnitude of a previous block, forming an estimate of the impulse response using determined magnitudes as parameters for a finite impulse response filter. The method of creating a multi¬ channel signal using a signal with fewer channels from a reverberant system includes sampling the signal from a reverberant system, having an impulse response, into a sequence of blocks, for each block of the sequence, determining a magnitude in dependence upon a magnitude of a previous block, forming an estimate of the impulse response using determined magnitudes as parameters for a finite impulse response filter, applying an inverse of the estimated impulse response to the signal to derive at least one of a direct signal component and a reverberant signal component, and recombining the direct signal component and the reverberant signal component to create a multi-channel signal.
    • 提供了一种用于提取和改变输入信号的混响内容的方法和装置。 估计混响系统的脉冲响应的方法包括对具有脉冲响应的混响系统的信号对序列的每个块进行采样,根据前一个块的幅度来确定幅度 ,使用确定的幅度作为有限脉冲响应滤波器的参数形成脉冲响应的估计。 使用具有来自混响系统的信道较少的信号来创建多声道信号的方法包括对具有脉冲响应的混响系统的信号对序列的每个块进行采样以确定序列的每个块的幅度 依赖于先前块的幅度,使用确定的幅度形成脉冲响应的估计作为有限脉冲响应滤波器的参数,将所估计的脉冲响应的反相应用于信号以导出直接信号分量和 混响信号分量,并重新组合直接信号分量和混响信号分量以产生多声道信号。