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JPS5873693

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DESCRIPTION JPS5873693
[0001]
Brief description of the drawings
[0002]
1 is a circuit diagram showing one embodiment of the microphone of the present invention, FIG.
2 is a directional characteristic diagram of the stereo microphone unit and the secondary sound
pressure gradient microphone shown in FIG. 1, and FIG. 3 is a secondary sound pressure gradient
The figure for demonstrating a microphone phone, FIG. 4 and FIG. 5 are the frequency
characteristic figures of the front direction which the secondary sound pressure gradient
microphone shown in FIG. 3 shows. 1 ······ Right stereo microphone unit, 2 ··· ··· Left stereo
microphone unit, 3, 5. 14,..., Combining circuit, 15 ... single microphone unit, 17 ... gain adjusting
circuit.
10-05-2019
1
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