hello,

Discussion in 'The Projects Forum' started by gayatri, Aug 12, 2009.

  1. gayatri

    Thread Starter New Member

    Jul 28, 2009
    8
    0
    i am doing a project "GUNSHOT DETECTION SYSTEM USING MICROPHONE ARRAY".
    the problem i am facing is with the frequency of this gunshot.i have got to know that it lies in the range of 150db to 170 db.could you please suggest me some microphones in this range and how do i go about it.
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Frequency is measured in different units. That used to be cycles per second, but the unit is now Hertz.

    Your measurements in dB (decibels) are intensity, or loudness. You will have no problem detecting a shot due to its being so loud.

    Anyway, why is microphone selection a problem? While some components of the gunshot frequencies may lie outside human hearing range, a great many do. Any mic should be able to respond.

    I would thing the problem is in determining if a loud noise is a shot or a slammed door (as an example). You might need to examine the frequency components and other characteristics of a gunshot in order to unambiguously detect one. Loudness depends on proximity to the source, so a distant shot may be less loud than a slammed door nearby.
     
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