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Inverse potential scattering in duct acoustics
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10.1121/1.2139618
/content/asa/journal/jasa/119/1/10.1121/1.2139618
http://aip.metastore.ingenta.com/content/asa/journal/jasa/119/1/10.1121/1.2139618
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

A schematic diagram of the acoustic pulse reflectometer.

Image of FIG. 2.
FIG. 2.

(a) Conical duct inversion for multimodal impulse response: theoretical radius (—), one mode (-∙-), two mode (⋯), three mode (---), one mode filtered at (×). (b) Conical duct inversion for multimodal impulse response: theoretical radius (—), one mode filtered at (⋯), experimental (×), experimental open-ended (-∙-). Both reconstructions include a lead-in tube.

Image of FIG. 3.
FIG. 3.

Schematic potential-function profile of duct terminated in barrier equivalent to a radiation impedance, , .

Image of FIG. 4.
FIG. 4.

Reconstruction of single barrier (see Fig. 3) from analytic data, at 180 (×), 20 (---) and 5 (—) kHz bandwiths, respectively.

Image of FIG. 5.
FIG. 5.

for configuration of Fig. 3 taken up to bandwidth.

Image of FIG. 6.
FIG. 6.

: analytic (—) and derived by Aktosun method (⋯) at bandwidth.

Image of FIG. 7.
FIG. 7.

Reconstruction of single barrier at bandwidth, from analytic data (×) and that obtained by Aktosun method (-∙-). Reconstruction of single barrier at bandwidth, from analytic data (—) and that obtained by Aktosun method (⋯).

Image of FIG. 8.
FIG. 8.

Reconstruction of conical bore at 180 (⋯), 20 (---), and 5 (×) kHz bandwidths. Also shown: nominal radius (—).

Image of FIG. 9.
FIG. 9.

Schematic potential-function profile of well-barrier pair, , , , .

Image of FIG. 10.
FIG. 10.

Reconstruction of well-barrier corresponding to Fig. 9, from data derived by Aktosun method at bandwidth.

Image of FIG. 11.
FIG. 11.

Magnified view of Fig. 10. Nominal solution (×); data derived at (---) and (⋯) bandwidths.

Image of FIG. 12.
FIG. 12.

Reconstruction of radius function corresponding to Figs. 9 and 11. Nominal solution (×), and from data derived at 180 (—), 20 (⋯), and 5 (---) kHz bandwidths.

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/content/asa/journal/jasa/119/1/10.1121/1.2139618
2006-01-01
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Inverse potential scattering in duct acoustics
http://aip.metastore.ingenta.com/content/asa/journal/jasa/119/1/10.1121/1.2139618
10.1121/1.2139618
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