直接音成分が残響音場での確率評価に及ぼす効果の特性関数法に基づく一研究

概要

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In this paper, how the output probability distribution form of sound energy is affected by the frequency width W of random input, the time constant T of sound level meter, the reverberation property of room and the existence of direct sound component is theoretically and experimentally considered, especially from the fundamental viewpoint by use of characteristic function method of probability. In two special cases with no signal component and a signal component of narrow frequency band, the proposed theory agrees with the well-known probability distribution expression derived previously in the field of room acoustics. Finally, by actually applying the above theory to the sound energy fluctuation observed in the diffused sound room, the legitimacy and the validity of theory are experimentally confirmed too.
社団法人日本音響学会の論文