seewave: convSPL – R documentation

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convSPL

Convert sound pressure level in other units

Description

This function 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 = 10^-12)
`pref`	reference pressure (in Pa) (by default = 2*10^-5)

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.

Examples

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

seewave

Sound Analysis and Synthesis

v2.1.6

GPL (>= 2)

Authors

Jerome Sueur <sueur@mnhn.fr> [cre, au], Thierry Aubin [au], Caroline Simonis [au], Laurent Lellouch [main ctrb], Ethan C. Brown [ctrb], Marion Depraetere [ctrb], Camille Desjonqueres [ctrb], Francois Fabianek [ctrb], Amandine Gasc [ctrb], Eric Kasten [ctrb], Stefanie LaZerte [ctrb], Jonathan Lees [ctrb], Jean Marchal [ctrb], Andre Mikulec [ctrb], Sandrine Pavoine [ctrb], David Pinaud [ctrb], Alicia Stotz [ctrb], Luis J. Villanueva-Rivera [ctrb], Zev Ross [ctrb], Carl G. Witthoft [ctrb], Hristo Zhivomirov [ctrb].

Initial release

2020-06-28