When intelligibilities of paired speech bands do not behave the way they are supposed to

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 passb...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2013-08, Vol.134 (2), p.EL244-EL250
Main Authors: Warren, Richard M, Bashford, Jr, James A, Lenz, Peter W
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Acoustics
Adolescent
Adult
Audiometry, Pure-Tone
Audiometry, Speech
Auditory Threshold
Female
Humans
Jasa Express Letters
Male
Speech Acoustics
Speech Intelligibility
Speech Perception
Young Adult
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Summary: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.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.4814945