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DESCRIPTION JPS5999598

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DESCRIPTION JPS5999598
[0001]
Brief description of the drawings
[0002]
1a shows an example of the structure of the variable directional microphone, FIG. 1 shows the
main part of the same microphone, FIG. 1C shows a control circuit, and FIGS. 2a and 2b show the
present invention. 2C shows a first embodiment of the imaging device using the first illustrated
microphone, FIG. 3 shows a second embodiment of the present invention, FIG. a and b show the
configuration of the third embodiment of the present invention. VR--a potentiometer 19a
showing distance information. 19b・・・マイクロホン。
11-04-2019
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