Home>ANSI/ASA S1.18-1999 (R2004)

ANSI/ASA S1.18-1999 (R2004)

ANSI/ASA S1.18-1999 (R2004)

Template Method for Ground Impedance American National Standards of the Acoustical Society of America / 25-Mar-2004 / 40 pages

More details

Download

PDF AVAILABLE FORMATS IMMEDIATE DOWNLOAD
$55.90 tax incl.

$130.00 tax incl.

(price reduced by 57 %)

1000 items in stock

This American National Standard describes procedures for obtaining the real and imaginary parts of the specific acoustic impedance of natural ground surfaces outdoors. The Standard uses templates to compare measured sound pressure level differences with a specific set of calculated level differences. The impedance values are obtained from a model based on best fit of measured and calculated level differences. The Standard may be used to obtain the impedance of porous sound absorbing material.



Contact us