HARK Document Version 1.9.9. (Revision: 5967) : Microphone position text format

5.2.1 Microphone position text format

The microphone position text format is a file that describes each microphone position of the microphone array used in GHDSS and harktool. When selecting CALC in the TF_CONJ property of GHDSS node, the MIC_FILENAME property appears. Give the coordinates of each microphone in the microphone array (saved in the microphone position format) into this column to generate an impulse response and perform sound source separation in simulation. The format is as follows.

The description of the tag

Table 5.7: microphone position Tag

tag name	Description
hark_config	file type
	id : "MicArrayLocation" fix
	major: Major number (2)
	minor: Minor number (0)
Comment	Comment
Mic size	number of Microphone
MicIndex	Mic number
	[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: microphone position file

example xml file: microphone array of 4 channels

<hark_xml>
  <hark_config id="MicArrayLocation" major="2" minor="0">
    <Comment>created by harktool4</Comment>
    <Mics size="4">
      <Mic>
        <MicIndex>0</MicIndex>
        <Position unit="meter" type="cartesian">
          <X>-0.957823</X>
          <Y>8.37355e-08</Y>
          <Z>0.287361</Z>
        </Position>
      </Mic>
      <Mic>
        <MicIndex>1</MicIndex>
        <Position unit="meter" type="cartesian">
          <X>1.14219e-08</X>
          <Y>-0.957823</Y>
          <Z>0.287361</Z>
        </Position>
      </Mic>
      <Mic>
        <MicIndex>2</MicIndex>
        <Position unit="meter" type="cartesian">
          <X>0.957823</X>
          <Y>0</Y>
          <Z>0.287361</Z>
        </Position>
      </Mic>
      <Mic>
        <MicIndex>3</MicIndex>
        <Position unit="meter" type="cartesian">
          <X>-4.18678e-08</X>
          <Y>0.957823</Y>
          <Z>0.287361</Z>
        </Position>
      </Mic>
    </Mics>
  </hark_config>
</hark_xml>