公开(公告)号：US20160064011A1

公开(公告)日：2016-03-03

申请号：US14836332

申请日：2015-08-26

Applicant: RION CO., LTD.

Inventor： Masahiro SUNOHARA ,  Mariko NAKAICHI

IPC: G10L21/034 ,  H04R3/00

CPC classification number: G10L21/034 ,  G10L21/0208 ,  G10L2021/02082 ,  H04R3/00

Abstract: A reverberation suppression apparatus includes: an instantaneous value calculation unit that calculates an instantaneous value/instantaneous values in an envelope of values correlating with the absolute value or the square of an input signal; a reverberation estimation unit that calculates an exponential moving average of the instantaneous value(s) as an estimated reverberation component; a gain derivation unit that derives a gain corresponding to the input signal according to the estimated reverberation component and the instantaneous value(s) when the each instantaneous value is larger than the estimated reverberation component, and derives a lower limit of the gain as the gain corresponding to the input signal when the each instantaneous value is smaller than the estimated reverberation component; a smoothing unit that performs a smoothing process on the gain; and a gain processing unit that applies the gain to amplitude adjustment of the input signal thereafter.

Abstract translation: 混响抑制装置包括：瞬时值计算单元，其计算与输入信号的绝对值或平方相关的值的包络中的瞬时值/瞬时值; 将所述瞬时值的指数移动平均值计算为估计混响分量的混响估计单元; 增益导出单元，当每个瞬时值大于估计的混响分量时，根据估计的混响分量和瞬时值，导出与输入信号相对应的增益，并且将增益的下限导出为增益 当每个瞬时值小于所估计的混响分量时，对应于输入信号; 对增益进行平滑处理的平滑单元; 以及增益处理单元，此后将输入信号的增益应用于幅度调整。