FUNDAMENTAL ANALYSIS OF TRANSMISSION CHARACTERISTICS OF ARTICULATED : Information Loss Analysis of Transient matrices in Articulation test

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  • 騒音場における音声伝達の特性解析 : 明瞭度と損失情報量による受聴系の基礎的構造解析
  • ソウオンバ ニ オケル オンセイ デンタツ ノ トクセイ カイセキ メイリョウ

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Abstract

Usually we use the percentage Articulation (Ar) to estimate the noise effect on the transmission of articulated syllables in noise field, and by using this Ar. we have discussed the effect only from the speaker's angle. But by analyzing the distribution characteristics of misheard syllables we can perform the quantitative analysis of the hearing efforts made by receivers in anechoic room in the Articulation tests. In this paper we discribe the transmission characteristics in view point of receivers by using information loss (H_i(j)) in noise field, and resultedin simple relation between (Ar) and (H_i(j)). That is (H_i(j))=m-m'(Ar)/(100) But this relation is available only in Octave Band noise field (centre frequency : 125, 250, …, 8k (Hz). In general case, we cannot use the relation because of the complexity of frequency characteristics of noise in actual life.

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