Package org.noise_planet.noisemodelling.emission.railway.nmpb

Class TrainAttenuation

java.lang.Object

org.noise_planet.noisemodelling.emission.railway.nmpb.TrainAttenuation

All Implemented Interfaces:

DirectivitySphere

public final class TrainAttenuation
extends Object
implements DirectivitySphere

Constructor Summary

Constructors

Constructor	Description
TrainAttenuation(RailWayNMPBParameters.TrainNoiseSource noiseSource)

Method Summary

Modifier and Type	Method	Description
boolean	coverFrequency(double frequency)	Check if this sphere is capable of producing an attenuation for this frequency
double	getAttenuation(double frequency, double phi, double theta)	Returns the attenuation in dB due to a particular frequency of the directivity pattern at a given angle (phi, theta)
double[]	getAttenuationArray(double[] frequencies, double phi, double theta)	Returns the attenuation in dB of the directivity pattern at a given angle (phi, theta).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

TrainAttenuation

public TrainAttenuation(RailWayNMPBParameters.TrainNoiseSource noiseSource)

Method Details

getAttenuation

public double getAttenuation(double frequency,
 double phi,
 double theta)

Returns the attenuation in dB due to a particular frequency of the directivity pattern at a given angle (phi, theta)

Specified by:

getAttenuation in interface DirectivitySphere

Parameters:

frequency - Frequency in Hertz

phi - (0 2π) with 0 is front

theta - (-π/2 π/2) with 0 is horizontal; π is top

Returns:

Attenuation in dB

getAttenuationArray

public double[] getAttenuationArray(double[] frequencies,
 double phi,
 double theta)

Returns the attenuation in dB of the directivity pattern at a given angle (phi, theta).

Specified by:

getAttenuationArray in interface DirectivitySphere

Parameters:

frequencies - Frequency array in Hertz (same order will be returned)

phi - (0 2π) 0 is front

theta - (-π/2 π/2) 0 is horizontal π is top

Returns:

Attenuation in dB for each frequency

coverFrequency

public boolean coverFrequency(double frequency)

Check if this sphere is capable of producing an attenuation for this frequency

Specified by:

coverFrequency in interface DirectivitySphere

Parameters:

frequency - Frequency in Hertz

Returns:

True