convSPL {seewave}R Documentation

Convert sound pressure level in other units

Description

This functions converts sound pressure level (in dB) in sound power (Watt), intensity (Watt/m2) and pressure (Pa). By default, these conversions are applied to air-borne sound.

Usage

convSPL(x, d = 1, Iref = 10^-12, pref = 2*10^-5)

Arguments

x a numeric vector or a matrix describind SPL values (in dB).
d the distance from the sound source where SPL values have been measured (in meter) (by default = 1m)
Iref reference intensity (in Watt/m2) (by default = 10e-12)
pref reference pressure (in Pa) (by default = 2.10e-5)

Details

~~ If necessary, more details than the description above ~~

Value

convSPL returns a list containing three components:

P data converted in sound power (in Watt).
I data converted in sound intensity (in Watt/m2).
p data converted in sound pressure (in Pa).

Note

Iref and pref correspond to a 1 kHz sound in air.

Author(s)

Jerome Sueur sueur@mnhn.fr

References

Hartmann, W. M. 1998 Signals, sound and sensation. New York: Springer.

See Also

moredB, attenuation

Examples

# conversion of two SPL measurements taken at 0.5 m from the source
convSPL(c(80,85),d=0.5) 

[Package seewave version 1.5.0 Index]