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  1. Bobby223355

    Shaker Tables - frequency precision for the inverse DFT

    Thanks Greg for you quick response. Can you tell me any rough estimate for the frequency precision (aka frequency bin size), df, that shaker tables normally use in order to discretize the input PSD when they are trying to convert an input PSD to a time-history (is it in the order of df = 1 Hz...
  2. Bobby223355

    Shaker Tables - frequency precision for the inverse DFT

    What frequency precision for the inverse DFT do shaker tables normally use in order to convert an input PSD into an excitation time history? My guess is that the frequency precision they use is far less than 1 Hz. Since there is an inverse relationship between the iDFT frequency precision (in...

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