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Intelligibilities of 1-octave rectangular bands spanning the speech spectrum when heard separately and paired
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10.1121/1.2047228
/content/asa/journal/jasa/118/5/10.1121/1.2047228
http://aip.metastore.ingenta.com/content/asa/journal/jasa/118/5/10.1121/1.2047228

Figures

Image of FIG. 1.
FIG. 1.

Long-term average spectrum of 180 LP SPIN sentences, subjected to two successive stages of 4000-order FIR filtering that produced a 1-octave rectangular band centered at . This plot for the filtered band is superimposed and coincides with the spectrum of the parent broadband stimulus. The plots were generated offline via discrete Fourier transform (DFT) with linear averaging of spectra using a 64 000-point ( resolution) Blackman window across the entire set of digitally recorded stimuli. Metric Halo Laboratories, Inc. produced the DFT software.

Image of FIG. 2.
FIG. 2.

Experiment 1: Mean percent intelligibility scores and standard errors as measured for the six 1-octave rectangular passbands presented at four different intensity levels to separate groups of listeners ( at each level).

Tables

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TABLE I.

Intelligibilities of individual rectangular 1-octave passbands spanning the speech spectrum and their synergistic or redundant interactions when paired. The matrix summarizes the results obtained in Experiments 1, 2, 3a, and 3b for bands presented at . The dark diagonal boxes show the intelligibility scores and standard errors for the six 1-octave rectangular passbands when heard alone. The boxes to the left of the diagonal show the dual-band intelligibility scores and standard errors (in parentheses) for all 15 possible pairings of the six bands. The boxes to the right of the diagonal show the percentage difference between the dual-band scores and the predicted scores based on the scores of the two component bands when heard alone, values indicate synergy, values (none found) would indicate redundancy (for further details see text). Note that the matrix exhibits reflection (or mirror) symmetry, so that if folded over on the major diagonal, the dual-band intelligibilities and their values are superimposed.

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/content/asa/journal/jasa/118/5/10.1121/1.2047228
2005-11-01
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Intelligibilities of 1-octave rectangular bands spanning the speech spectrum when heard separately and paired
http://aip.metastore.ingenta.com/content/asa/journal/jasa/118/5/10.1121/1.2047228
10.1121/1.2047228
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