calculate RMS value from sample value

Discussion in 'General Electronics Chat' started by dileepchacko, Jul 8, 2008.

  1. dileepchacko

    Thread Starter Active Member

    May 13, 2008
    102
    1
    Hi all

    Please help me to calculate RMS value of the signal from sample values of that signal.
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,144
    1,790
    1. Square each sample
    2. Sum the squared samples
    3. Divide the sum of the squared samples by the number of samples
    4. Take the square root of step 3., the mean of the squared samples
    This is the ROOT-MEAN-SQUARED value. It is also the population standard deviation of the samples.
     
  3. Dave

    Retired Moderator

    Nov 17, 2003
    6,960
    144
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