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    5. What about directivity?

    Ultrasonic Sensors FAQQWhat about directivity?

    A
    萝莉影视 ultrasonic sensors have directivity of 80 deg. (isotropic). (Directivity is defined as the angles at which sound pressure is reduced to halve the sound pressure measured in front. With an 80 deg. directivity, sound pressure is reduced by half at 40 deg. on both sides.)

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    5. What about directivity?
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