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The experimental synthesis of random pressure fields: Practical feasibility
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10.1121/1.2354005
/content/asa/journal/jasa/120/5/10.1121/1.2354005
http://aip.metastore.ingenta.com/content/asa/journal/jasa/120/5/10.1121/1.2354005

Figures

Image of FIG. 1.
FIG. 1.

Normalized mean-square error for the simulation of an acoustic diffuse field (solid), a grazing plane wave (dashed), and a TBL pressure field (dash-dotted).

Image of FIG. 2.
FIG. 2.

Spatial correlation structures at 480 (left) and (right) when perfect reproduction of an acoustic diffuse field is assumed (top), that predicted from the measured plant responses (middle), and that experimentally synthesized with loudspeakers (bottom).

Image of FIG. 3.
FIG. 3.

Spatial correlation structures at 300 (left) and (right) when perfect reproduction of an acoustic plane wave is assumed (top), that predicted from the measured plant responses (middle), and that experimentally synthesized with loudspeakers (bottom).

Image of FIG. 4.
FIG. 4.

Spatial correlation structures at 200 (left) and (right) when perfect reproduction of TBL is assumed (top), that predicted from the measured plant responses (middle), and that experimentally synthesized with loudspeakers (bottom).

Image of FIG. 5.
FIG. 5.

Normalized mean-square error calculated from the measured plant matrix when (dotted), (thin solid), and (thick solid) loudspeakers were used to reproduce an acoustic diffuse field.

Image of FIG. 6.
FIG. 6.

Normalized residual errors estimated when (dotted), (thin solid), and (thick solid) loudspeakers were used for the experimental synthesis of an acoustic diffuse field.

Image of FIG. 7.
FIG. 7.

Residual errors for the experimental synthesis of random excitations, those predicted from the measured plant responses (diffuse: bold line; plane wave: dotted line; TBL: dash-dotted line) and those experimentally synthesized (diffuse:circles; plane wave: crosses; TBL: diamonds).

Image of FIG. 8.
FIG. 8.

The normalized mean-square error induced on the panel acoustic response when a diffuse field (thick solid) and a TBL (thick dash-dotted) are simulated together with the corresponding normalized mean square excitation error (respectively, thin solid and thin dash-dotted).

Image of FIG. 9.
FIG. 9.

Residual errors associated with the experimental synthesis of a diffuse field (dash-dotted thick), with the induced structural response (dash-dotted thin) and with the induced acoustic response (dotted).

Image of FIG. 10.
FIG. 10.

Spatial correlation structures at associated with the excitation (top) and with the induced structural and acoustic responses (respectively, middle and bottom), when perfect reproduction of a diffuse field is assumed (left) and when it is experimentally synthesized with loudspeakers (right).

Image of FIG. 11.
FIG. 11.

Residual errors associated with the experimental reconstruction of the TBL pressure field (dash-dotted thick), with the induced structural response (dash-dotted thin) and with the induced acoustic response (dotted).

Image of FIG. 12.
FIG. 12.

Spatial correlation structures at associated with the excitation (top) and with the panel structural and acoustic responses (respectively, middle and bottom), when perfect reproduction of a TBL is assumed (left) and when it is experimentally synthesized with loudspeakers (right).

Image of FIG. 13.
FIG. 13.

Kinetic energy of the panel when subject to either a diffuse field (assumed: bold; experimentally simulated: thin) or a TBL (assumed: dashed bold; experimentally simulated: dashed thin).

Image of FIG. 14.
FIG. 14.

Sound power radiated by the panel when subject to either a diffuse field (assumed: bold; experimentally simulated: thin) or a TBL (assumed: dashed bold; experimentally simulated: dashed thin).

Tables

Generic image for table
TABLE I.

Criteria on the number of acoustic sources required for the synthesis of a number of random pressure fields.

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/content/asa/journal/jasa/120/5/10.1121/1.2354005
2006-11-01
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The experimental synthesis of random pressure fields: Practical feasibility
http://aip.metastore.ingenta.com/content/asa/journal/jasa/120/5/10.1121/1.2354005
10.1121/1.2354005
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