?function?y=zoomfft（xnmsd）
?%ZOOMFFT????DFT?evaluated?over?a?linear?frequency?range?Y=（XNMSD）
?%?Inputs:
?%????x????vector?（or?matrix）
?%????n????frequency?increment?is?fs/n?[default?n=length（x）]
?%????m????mumber?of?output?points?is?floor（m）?[default?m=n]
?%????s????starting?frequency?is?s*fs/n?[default?s=0]
?%????d????dimension?along?which?to?do?fft?[default?d=first?non-singleton]
?%
?%?This?routine?allows?the?evaluation?of?the?DFT?over?an?arbitrary?range?of
?%?frequencies;?as?its?name?implies?this?lets?you?zoom?into?a?narrow?portion
?%?of?the?spectrum.
?%?The?DFT?of?X?will?be?evaluated?along?dimension?D?at?the?M?frequencies
?%?f=fs*（s+（0:m-1））/n?where?fs?is?the?sample?frequency.?Note?that?N?and?S
?%?need?not?be?integers?although?M?will?be?rounded?down?to?an?integer

?屬性????????????大小?????日期????時間???名稱
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?????文件???????3446??2010-03-23?09:42??code\chirp+fourier+transform.m

?????文件?????155317??2010-03-19?16:45??code\CZT?vs?FFT?Flexibility?vs?Speed?Abstract.pdf

?????文件???????1738??2010-03-23?09:39??code\czt.m

?????目錄??????????0??2013-10-22?23:07??code

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???????????????160501????????????????????4