Transforming a complex single sided spectra to time domain

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jack walker
jack walker 2019-11-13
回答： Muhammad Waqar 2021-12-10
I want to transform a single sided complex spectrum to a time domain wave using the IFFT function. I want a real time domain signal so build a 2 sided conjugate symmetrical signal but the output of my IFFT is still complex. Can someone please advice where I am going wrong? Code below (FreqData is the complex single sided spectrum)
H=flipud(conj(FreqData))
ifft([FreqData;H])

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回答（1 个）

Muhammad Waqar
Muhammad Waqar 2021-12-10
Hi there,
Here is a link to an easy-to-use function to perform fft or ifft along with an example:
https://au.mathworks.com/matlabcentral/fileexchange/89182-get-single-sided-spectrum-from-time-signal-and-viceversa?s_tid=prof_contriblnk

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