Psychology Department, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, Wisconsin 53201, USA.
J Acoust Soc Am. 2013 Aug;134(2):EL244-50. doi: 10.1121/1.4814945.
Two rectangular 1/3-octave passbands were derived from different spectral regions of everyday sentences, with the intelligibility of one band approximately twice the others. Both passbands were then filtered to produce a series of narrower rectangular passbands. Each of the original 1/3-octave passbands in turn served as the fixed bandwidth "pedestal" and was paired with each of the series of narrower passbands of the other band. Remarkably, dual band intelligibilities were the same, regardless of which band served as pedestal, so the summed bandwidths determined intelligibility: The summed intelligibilities were irrelevant. Implications of this paradoxical "summed bandwidth rule" are discussed.
两段矩形的 1/3 倍频程通带是从日常句子的不同光谱区域提取的，其中一个通带的可懂度大约是另一个的两倍。然后对这两个通带进行滤波，以产生一系列较窄的矩形通带。原始的 1/3 倍频程通带中的每一个都依次作为固定带宽的“基座”，并与另一个通带的一系列较窄通带中的每一个配对。值得注意的是，双频带的可懂度是相同的，无论哪个通带作为基座，因此，带宽总和决定了可懂度：带宽总和是无关紧要的。这种矛盾的“带宽总和规则”的含义将被讨论。
