absorptionAir {bioSNR}

absorptionAir

Description

This function is the standard method of calculating the absorption of sound in air (ISO 9613-1).

Usage

absorptionAir(f, p, t, h, pr = 101.325, tr = 293.15, to = 273.16)

Arguments

f

The frequency of the sound source in Hz

p

The ambient atmospheric pressure in kPa

t

The ambient atmospheric temperature in C

h

The relative humidity as a percent

pr

The standard pressure at mean sea level

tr

The standard temperature in Celcius (293.15 in kelvin)

to

The triple-point isotherm temperature

Value

The sound attenuation rate in dB/m

Examples

#How much are Malayan tapir calls (15 kHz) absorbed in a tropical region
#(30 deg C) assuming a humidity of 80% and standard pressure (101.325)?
absorptionAir(15000, 101.325, 30, 80)