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measuring the sound intensity of Ultrasonic Pest Repellent

Discussion in 'General Electronics Discussion' started by mr. robot, Feb 26, 2016.

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  1. mr. robot

    mr. robot

    1
    0
    Feb 26, 2016
    please help me
    I need to know how can I measure the sound intensity of my ultrasonic pest repellent
    it has frequency output of 38kHz-58kHz
    I need to know the step by step procedure to measure the sound intensity at 4 meters if I only know the power output.
    hoping someone could help me
    thanks
     
  2. shrtrnd

    shrtrnd

    3,749
    482
    Jan 15, 2010
    I don't know how to do this without some specialized equipment designed to do it.
    I built a few of these years ago for my own use, maybe you're designing one for commercial sale?
    The most important factor in the ones I built was finding the piezo 'speakers' capable of reproducing the desired frequency output. That took some effort.
    Why is it that you need to measure sound 'intensity'?
     
  3. Alec_t

    Alec_t

    2,859
    767
    Jul 7, 2015
    Does this help?
     
  4. Colin Mitchell

    Colin Mitchell

    1,417
    312
    Aug 31, 2014
    You need to get a piezo diaphragm that is capable of detecting (transmitting) at 60kHz.
    Connect is to a CRO and look at the waveform. That's what I do. And the psychiatric nurse let's me do it twice a week.
     
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