exmp2_2.m

来自「用dsp解压mp3程序的算法」· M 代码 · 共 8 行

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% exmp2_2.m - Estimate power of signal saved in data file
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load sn.dat -ASCII;    % load saved sinewave samples 
                       % generated in Example 2.1
N = length(sn);        % length of vector sn
Px = sum(abs(sn).^2)/N % estimate power of sequence sn