低周波音測定における広義ディジタル・フィルタ利用の風雑音除去に関する確率的信号処理法

概要

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As is well-known, in the measurement of low frequency sound, a main spectrum component of the wind noise coexists almost within the same frequency bands as the low frequency sound. Accordingly, it is essentially difficult to eliminate this effect of wind noise only by using the analog filter based on the usual electrical circuit. From the above point of view, in this paper, a new trial of removing the above effect of wind noise are proposed, especially, by focusing the dynamically computer aided algorithm of state estimation. Concretely, this method is based on the principle of Bayes' filter. Finally, the effectiveness of the proposed state estimation method is experimentally confirmed too by applying it to the actual data of low frequency sound signal observed in a free sound field.
社団法人日本音響学会の論文