File:CrestFactorCalculation.png

C = {|x|_\mathrm{peak} \over {\sqrt {{1 \over n} \sum_{i=1}^{n} x_i^2}}} = {|x|_\mathrm{peak} \over {\sqrt {{x_1^2 + x_2^2 + \cdots + x_n^2} \over n}}

... is what I believe that can render this image. However, this image render using OpenOffice.org Math with:

C = {{abs{x}}_{peak}} over {sqrt{ 1 over n sum from i = 1 to n x^{2}_{i}}} = {abs{x}}_{peak} over {sqrt{{x^2_1 + x^2_2 + dotsaxis + x^2_n} over n}}