Class SceneWithAttenuation

java.lang.Object

org.noise_planet.noisemodelling.pathfinder.path.Scene

org.noise_planet.noisemodelling.propagation.SceneWithAttenuation

Direct Known Subclasses:

SceneWithEmission

public class SceneWithAttenuation
extends Scene

Scene is used by ProfileBuilder to construct profiles with only taking account of geometry information. This scene is adding information about attenuation and source power

Field Summary

Fields

Modifier and Type	Field	Description
int	bodyBarrierMaxReflectionOrder	Maximum number of reflections between train body and barrier (body barrier interaction).
Map<String, AttenuationParameters>	cnossosParametersPerPeriod	Define attenuation settings to apply for each period
static final String	CREF_DATABASE_FIELD
static final double	DEFAULT_GS
AttenuationParameters	defaultCnossosParameters	If cnossosParametersPerPeriod is empty, attenuation visitor will use this default settings and output empty period
Map<Integer, DirectivitySphere>	directionAttributes	Attenuation and other attributes relative to direction on sphere
static final String	HRAIL_DATABASE_FIELD
Set<String>	periodSet	Keep a known set of all periods of the simulation This set is used to output a default value when there is no sound source found for a specific period
Map<Long,Double>	sourceCref	Link between sources PK and Cref (vehicle body reflection coefficient). 0 = no body barrier (road sources or open freight), 1 = fully reflecting body.
Map<Long,Integer>	sourceEmissionAttenuation	Link between sources PK and DirectivitySphere specified in linked with directionAttributes
Map<Long,Double>	sourceGs	Link between sources PK and gs ground factor of the source area
Map<Long,Double>	sourceHRail	Link between sources PK and hRail (rail platform height).

Fields inherited from class Scene

computeHorizontalDiffraction, computeVerticalDiffraction, DEFAULT_G, DEFAULT_G_BUILDING, DEFAULT_MAX_PROPAGATION_DISTANCE, DEFAULT_MAXIMUM_REF_DIST, DEFAULT_RECEIVER_DIST, defaultGroundAttenuation, DIRECTIVITY_DATABASE_FIELD, GS_DATABASE_FIELD, lineSourceSpacingRatio, maxRefDist, maxSrcDist, PITCH_DATABASE_FIELD, profileBuilder, receivers, receiversPk, reflexionOrder, ROLL_DATABASE_FIELD, sourceGeometries, sourceOrientation, sourcesIndex, sourcesPk, YAW_DATABASE_FIELD

Constructor Summary

Constructors

Constructor	Description
SceneWithAttenuation()
SceneWithAttenuation(ProfileBuilder profileBuilder)

Method Summary

Modifier and Type	Method	Description
void	addSource(Long pk, org.locationtech.jts.geom.Geometry geom, Double gs)	Add geometry with additional attributes
void	addSource(Long pk, org.locationtech.jts.geom.Geometry geom, org.h2gis.utilities.SpatialResultSet rs, Map<String,Integer> sourceFieldNames)	Add geometry with additional attributes
void	clearSources()
double[]	getSourceAttenuation(int srcIndex, double[] frequencies, double phi, double theta)
double	getSourceGs(int srcIndex)	Retrieves the ground speed of the noise source at the specified index.
double	getSourceGs(long srcPrimaryKey)	Retrieves the ground speed of the noise source at the specified index.
boolean	isOmnidirectional(int srcIndex)	Checks if the noise source at the specified index is omnidirectional.
void	setDirectionAttributes(Map<Integer, DirectivitySphere> directionAttributes)	Sets the direction attributes for the receiver.

Methods inherited from class Scene

addReceiver, addReceiver, addReceiver, addSource, addSource, addSource, getCloseReceiverReflectionWallDistance, getReflexionOrder, setCloseReceiverReflectionWallDistance, setComputeHorizontalDiffraction, setComputeVerticalDiffraction, setDefaultGroundAttenuation, setReflexionOrder

Methods inherited from class Object

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

Field Details

DEFAULT_GS

public static final double DEFAULT_GS

See Also:

• Constant Field Values

directionAttributes

public Map<Integer, DirectivitySphere> directionAttributes

Attenuation and other attributes relative to direction on sphere

sourceEmissionAttenuation

public Map<Long,Integer> sourceEmissionAttenuation

Link between sources PK and DirectivitySphere specified in linked with directionAttributes

sourceGs

public Map<Long,Double> sourceGs

Link between sources PK and gs ground factor of the source area

sourceHRail

public Map<Long,Double> sourceHRail

Link between sources PK and hRail (rail platform height). Used in body barrier calculation for train noise propagation.

sourceCref

public Map<Long,Double> sourceCref

Link between sources PK and Cref (vehicle body reflection coefficient). 0 = no body barrier (road sources or open freight), 1 = fully reflecting body. Used in body barrier calculation.

bodyBarrierMaxReflectionOrder

public int bodyBarrierMaxReflectionOrder

Maximum number of reflections between train body and barrier (body barrier interaction). Default is 3 as recommended by NMPB guide. Set to higher values (e.g. 10) for convergence studies.

HRAIL_DATABASE_FIELD

public static final String HRAIL_DATABASE_FIELD

See Also:

• Constant Field Values

CREF_DATABASE_FIELD

public static final String CREF_DATABASE_FIELD

See Also:

• Constant Field Values

defaultCnossosParameters

public AttenuationParameters defaultCnossosParameters

If cnossosParametersPerPeriod is empty, attenuation visitor will use this default settings and output empty period

cnossosParametersPerPeriod

public Map<String, AttenuationParameters> cnossosParametersPerPeriod

Define attenuation settings to apply for each period

periodSet

public Set<String> periodSet

Keep a known set of all periods of the simulation This set is used to output a default value when there is no sound source found for a specific period

Constructor Details

SceneWithAttenuation

public SceneWithAttenuation(ProfileBuilder profileBuilder)

SceneWithAttenuation

public SceneWithAttenuation()

Method Details

getSourceGs

public double getSourceGs(int srcIndex)

Retrieves the ground speed of the noise source at the specified index.

Parameters:

srcIndex - Source index

Returns:

the ground speed of the noise source at the specified index.

getSourceGs

public double getSourceGs(long srcPrimaryKey)

Retrieves the ground speed of the noise source at the specified index.

Parameters:

srcPrimaryKey - Source primary key

Returns:

the ground speed of the noise source at the specified index.

addSource

public void addSource(Long pk,
 org.locationtech.jts.geom.Geometry geom,
 Double gs)

Add geometry with additional attributes

Parameters:

pk - Unique source identifier

geom - Source geometry

gs - Additional attributes

setDirectionAttributes

public void setDirectionAttributes(Map<Integer, DirectivitySphere> directionAttributes)

Sets the direction attributes for the receiver.

Parameters:

directionAttributes -

addSource

public void addSource(Long pk,
 org.locationtech.jts.geom.Geometry geom,
 org.h2gis.utilities.SpatialResultSet rs,
 Map<String,Integer> sourceFieldNames)
               throws SQLException

Add geometry with additional attributes

Parameters:

pk - Unique source identifier

geom - Source geometry

rs - Additional attributes fetched from database

Throws:

SQLException

isOmnidirectional

public boolean isOmnidirectional(int srcIndex)

Checks if the noise source at the specified index is omnidirectional.

Parameters:

srcIndex - Source index in the list sourceGeometries

Returns:

True if the source is omnidirectional and so does not have orientation dependant attenuation, false otherwise.

getSourceAttenuation

public double[] getSourceAttenuation(int srcIndex,
 double[] frequencies,
 double phi,
 double theta)

Parameters:

srcIndex - Source index in the list sourceGeometries

frequencies - Frequency in Hertz

phi - (0 2π) 0 is front

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

Returns:

clearSources

public void clearSources()

Overrides:

clearSources in class Scene