www.gusucode.com > signal 案例源码程序 matlab代码 > signal/SpecifyTimeHalfbandwidthProductExample.m
%% Specify Time-Halfbandwidth Product % Obtain the multitaper PSD estimate with a specified time-halfbandwidth % product. % Copyright 2015 The MathWorks, Inc. %% % Create a sine wave with an angular frequency of $\pi/4$ rad/sample with % additive _N_(0,1) white noise. The signal is 320 samples in length. % Obtain the multitaper PSD estimate with a time-halfbandwidth product of % 2.5. The resolution bandwidth is $[-2.5\pi/320,2.5\pi/320]$ rad/sample. % The default number of DFT points is 512. Because the signal is % real-valued, the PSD estimate is one-sided and there are 512/2+1 points % in the PSD estimate. n = 0:319; x = cos(pi/4*n)+randn(size(n)); pmtm(x,2.5)