Development of Optophone with No Diaphragm and Application to Sound Measurement in Jet Flow

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="909437.fig.0022a" src="https://static.hindawi.com/articles/aav/volume-2012/909437/figures/909437.fig.0022a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Electrostatic microphone</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="909437.fig.0022b" src="https://static.hindawi.com/articles/aav/volume-2012/909437/figures/909437.fig.0022b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Laser beam microphone with CT</td></tr></table></td></tr><tr class="fig-image" id="c"><td><img alt="909437.fig.0022c" src="https://static.hindawi.com/articles/aav/volume-2012/909437/figures/909437.fig.0022c.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(c) </b>Comparison</td></tr></table></td></tr></table>

<table>Comparison of measured results.</table>

Advances in Acoustics and Vibration

fig22

Figure 22

Figure 22: Development of Optophone with No Diaphragm and Application to Sound Measurement in Jet Flow 