MATLAB環境下信号短時平穩持續時間估計
算法運作環境為MATLAB R2021B，執行信号的短時平穩持續時間估計。
% plot the signal statiogram
figure(1)
statiogram(x, fr_len, gamma, 'detrend')
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xlabel('Frame duration, ms')
set(gca, 'XTickLabel', num2str(fr_dur(:)*1000))
% Comment: The statiogram shows that the signal is non-stationary for all
% frame durations of interest.
