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%% Peak-Magnitude-to-RMS Ratios of 2-D Matrix % Create a matrix where each column is a 100 Hz sinusoid sampled at 1 kHz % with a different amplitude. The amplitude is equal to the column index. % Copyright 2015 The MathWorks, Inc. %% % Compute the peak-magnitude-to-RMS ratios of the columns. t = 0:0.001:1-0.001; x = cos(2*pi*100*t)'*(1:4); y = peak2rms(x)