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Influence of primary-level and primary-frequency ratios on human distortion product otoacoustic emissionsa)
a)Portions of this work were presented at the 28th Midwinter Meeting of the Association for Research in Otolaryngology, New Orleans, LA, February 2005.
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10.1121/1.2133714
/content/asa/journal/jasa/119/1/10.1121/1.2133714
http://aip.metastore.ingenta.com/content/asa/journal/jasa/119/1/10.1121/1.2133714
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Contour plots representing DPOAE level in stimulus space. Each column represents data for a different and each row represents a different , as indicated on the figure. The contours are spaced in increments of DPOAE level. As a reference, the contour corresponding to SPL is indicated with a thicker line. The maximum DPOAE level in panels without a reference (, ) is SPL. The slanting, straight lines in each panel describe the relationship producing the largest DPOAE level at each . Our approach for fitting this line is described in the text.

Image of FIG. 2.
FIG. 2.

The slope of the average, optimal path as a function of . The parameter is .

Image of FIG. 3.
FIG. 3.

DPOAE level is plotted as a function of with primary-frequency ratio as a parameter. Each panel represents a different , as indicated. The solid line in each panel represents DPOAE level for . Shorter dashes correspond to and longer dashes correspond to . The line thickness represents the distance the frequency ratio is from 1.20, with and 1.40 indicated by the thinnest dashed lines.

Image of FIG. 4.
FIG. 4.

Mean DPOAE level as a function of frequency ratio. Each panel represents data for a different . Here, the parameter is , with decreasing line thickness indicating increasing in increments of . When , data for SPL are plotted; for all other frequencies data are plotted for ranging from SPL.

Image of FIG. 5.
FIG. 5.

Mean DPOAE level as a function of frequency ratio when and , 50, and SPL (indicated with decreasing line thickness). Errors bars represent standard deviation.

Image of FIG. 6.
FIG. 6.

Our approach to specifying optimal stimulus parameters. The upper panel plots as a function of while the lower panel plots as a function of . The parameter is , as indicated within the upper panel. The symbols shown in each panel correspond to the (upper panel) or (lower panel) producing the largest DPOAE at each . The lines in each panel represent the best fit to the stimulus conditions producing the maximum DPOAE according to the approach described in the text. The equations describing these lines are shown as an inset in each panel.

Image of FIG. 7.
FIG. 7.

DPOAE level as a function of . Each panel represents a different . The parameter is the stimulus condition used to record the DPOAE, as indicated in the legend. The nearly horizontal lines near the bottom of each panel represent the corresponding noise levels.

Image of FIG. 8.
FIG. 8.

DPOAE noise levels as a function of frequency ratio with each panel corresponding to a different . Each symbol corresponds to a different path as indicated in the legend.

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/content/asa/journal/jasa/119/1/10.1121/1.2133714
2006-01-01
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Influence of primary-level and primary-frequency ratios on human distortion product otoacoustic emissionsa)
http://aip.metastore.ingenta.com/content/asa/journal/jasa/119/1/10.1121/1.2133714
10.1121/1.2133714
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