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    • 53. 发明公开
    • NOISE SUPPRESSION DEVICE AND NOISE SUPPRESSION METHOD
    • RAUSCHUNTERDRÜCKUNGSVORRICHTUNGENUNDRAUSCHUNTERDRÜCKUNGSVERFAHREN
    • EP2254112A1
    • 2010-11-24
    • EP09722185.7
    • 2009-03-18
    • Tokyo University Of Science Educational Foundation Administrative Organization
    • The designation of the inventor has not yet been filed
    • G10L21/02
    • G06T5/50G06T5/002G06T5/003G06T2207/10016G06T2207/20076G06T2207/20182G06T2207/20221G10L21/0208G10L25/06G10L2021/02163
    • Disclosed is a noise suppression device capable of better noise suppression by means of a simpler structure and with a lighter computational load. A noise suppression device (100) has a noise suppression processor (150) to estimate the required information only from the observed information, which is the required information corrupted by noise. A correlator (154) calculates the correlation of the estimation error when the state quantity, which contains the required information, of the system at time n+1 was estimated from the information until time n or time n+1 for the observed information at only time n. A weighting coefficient calculator (156) uses the correlation calculated by the correlator (154) for the observed information at only time n to calculate the weighting coefficients for specifying the relationships of the optimum estimate of the state quantity at that time based on the information until time n+1, the optimum estimate of the state quantity at time n+1 based on the information until time n, and the estimation error of the observed quantity including the observed information. An optimum estimate calculator (158) uses the weighting coefficients calculated by the weighting coefficient calculator (156) for the observed information only at time n to calculate the optimum estimate of the state quantity at that time based on the information until time n or time n+1.
    • 公开了一种噪声抑制装置,其能够通过更简单的结构和更轻的计算负载来更好地进行噪声抑制。 噪声抑制装置(100)具有噪声抑制处理器(150),仅从所观察到的信息估计所需信息,所述信息是被噪声破坏的所需信息。 相关器(154)根据信息直到时间n或时间n + 1为仅观察信息估计包含所需信息的状态数量(包含所需信息)的时间n + 1时的估计误差的相关性 时间n 加权系数计算器(156)使用由相关器(154)计算的相关性仅在时间n处的观测信息,以基于该信息计算用于指定当时状态量的最佳估计的关系的加权系数,直到 时间n + 1,基于直到时间n的信息在时间n + 1的状态量的最佳估计,以及包括观察信息的观测量的估计误差。 最佳估计计算器(158)仅在时间n使用由加权系数计算器(156)计算的加权系数,以便根据该信息直到时间n或时间n来计算当时状态量的最佳估计 +1。