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Free-Field Noise Transmission

When the noise transmission takes place in a free field (no reflective surfaces), it is possible to calculate the pressure levels at different distances from the source. For spherical propagation, the following formula can be used  [Pg.798]

FIGURE 9.63 NC and NR curves and examples of application-The examined noise has an NR index of 28 and an NC index of 25. [Pg.799]

See other pages where Free-Field Noise Transmission is mentioned: [Pg.678]    [Pg.678]    [Pg.29]    [Pg.132]    [Pg.703]    [Pg.132]    [Pg.703]    [Pg.921]    [Pg.139]   


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