Reverberation Formula Which Seems to be More Accurate with Nonuniform Distribution of Absorption, with Field Examples of its Application
Reverberation Formula Which Seems to be More Accurate with Nonuniform Distribution of Absorption, with Field Examples of its Application
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吸收分布不均匀看起来更准确的混响公式及其现场应用实例
DOI：
10.1121/1.1930145
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发表时间：
1959
影响因子：
2.4
通讯作者：
Dariel Fitzroy
中科院分区：
文献类型：
--
作者：
Dariel Fitzroy
混响测量，在房间中的吸收是不均匀分布，通常有很大的变化，从通常采用的公式的基础上的预测。本文通过对大量房间的吸声分布均匀性变化较大的情况进行大量试验，提出了一个经验公式。图形记录器衰减曲线的照片显示了预测斜率的对比，似乎证实了公式的有效性。记录器曲线是在现场采集的记录。所提交的数据是测量积累的一小部分，涵盖了大约五至六年的时间，测量的房间体积变化很大，边界比率变化很大，吸收量和吸收分布比率明显不同。本文还包括一个新的半圆形加州共济会纪念寺3300个座位的礼堂，最近在旧金山弗朗西斯科完成的讨论，连同其他房间的困难形状的经验。(This是一篇论文的扩展，原计划在华盛顿会议上发表，但没有发表。）
Reverberation measurements, made in rooms where the absorption is nonuniformly distributed, usually vary widely from the predictions based on the usually employed formulas. Through extensive tests made in a large number of rooms, where distribution of sound absorption varies widely in uniformity, an empirically derived formula is submitted. Photographs of graphic recorder decay curves, showing contrasts in predicted slopes, seem to confirm the validity of the formula. The recorder curves are records taken in the field. The data submitted are a small portion of an accumulation of measurements, covering a period of some five to six years, in rooms of widely varying volumes, widely varying boundary ratios, and marked dissimilarity in amounts of absorption and ratios of absorption distribution. This paper also includes a discussion of the new semicircular California Masonic Memorial Temple 3300‐seat auditorium, recently completed in San Francisco, together with experiences with other rooms of difficult shapes. (This is an expansion of a paper, originally planned for the Washington meeting but not delivered.)