Method for calculating causal impulse response from a band-limited spectrum
    1.
    发明授权
    Method for calculating causal impulse response from a band-limited spectrum 有权
    从带限频谱计算因果脉冲响应的方法

    公开(公告)号:US08694568B2

    公开(公告)日:2014-04-08

    申请号:US13091666

    申请日:2011-04-21

    IPC分类号: G06F17/10

    摘要: A computer-implemented method for calculating a time-domain impulse response with improved causality based on a first spectrum in a frequency domain is disclosed. The first spectrum may be band-limited. The method may calculate a first time-domain impulse response from the first spectrum. The method may remove a non-causal portion of the first system time-domain impulse response to obtain a second time-domain impulse response, and calculate a second spectrum of the second time-domain impulse response. The method may further modify the second spectrum by adding a causal signal such that a difference between the second spectrum and the first spectrum is reduced. The method may also calculate the time-domain impulse response with improved causality from the modified second spectrum.

    摘要翻译: 公开了一种用于基于频域中的第一频谱来改善因果关系来计算时域脉冲响应的计算机实现的方法。 第一个频谱可能是频带限制的。 该方法可以计算来自第一光谱的第一时域脉冲响应。 该方法可以去除第一系统时域脉冲响应的非因果部分以获得第二时域脉冲响应,并且计算第二时域脉冲响应的第二频谱。 该方法可以通过增加因果信号来进一步修改第二频谱,使得第二频谱和第一频谱之间的差减小。 该方法还可以从经修改的第二频谱改进的因果关系来计算时域脉冲响应。