5.2.2 Noise position text format

The noise source file is a file to designate a stationary noise direction from a fixed direction in GHDSS . By selecting truein the FIXED_NOISE property of GHDSS node, the FIXED_NOISE_FILENAME property appears. Giving this column a sound source coordinate in the noise source format, process a noise of the direction as known noise source.

The description of the tag
Table 5.8: Noise position tag

tag name

Description

hark_config

File Type

 

id : "NoiseLocation" fix

 

major: Major number (2)

 

minor: Minor number (0)

Comment

Comment

NoiseSources size

"1" fix

NoiseIndex

"0" fix

Position

Coordinate position of sound source position

 

[Measurement coordinate] Measurement coordinate represents

 

directional vectors from the center (an origin) of a microphone

 

array to a measurement point (x, y, z). Users are to describe so

 

that the magnitude of the vector $\sqrt {x^2 y^2 z^2}$ becomes 1.0.

 

unit: meter

 

type: cartesian

X

sound source position: X axis (Refer to Position tag)

Y

sound source position: Y axis (Refer to Position tag)

Z

sound source position: Z axis (Refer to Position tag)


Example: Noise position
<hark_xml>
<hark_config id="NoiseLocation" major="2" minor="0">
  <Comment>created by harktool4</Comment>  
  <NoiseSources size="1">  
    <NoiseSource>  
      <NoiseIndex>0</NoiseIndex>  
      <Position unit="meter" type="cartesian">  
        <X>-4.37114e-08</X>  
        <Y>-3.82137e-15</Y>  
        <Z>1</Z>  
      </Position>  
      </NoiseSource>  
    </NoiseSources>  
  </hark_config>  
</hark_xml>