fftfreq - get exact Matlab FFT frequencies

版本 1.0.2 (1.9 KB) 作者: Kristupas Tikuišis
Calculate FFT frequencies of the amplitudes calculated with the FFT
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更新时间 2023/4/13

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Calculates the exact Fourier frequencies for spectra calculated via FFT. This functionality is not provided by Matlab, hence requires custom function. Currently only works on vectors/1D arrays.
It is not straightforward due to how the operation is done on a bit-level. The first coefficient is 0 Hz (the DC component) but higher negative and positive frequencies are ordered in a specific way, separated at the Nyquist frequency (also optionally returned by the function).

引用格式

Kristupas Tikuišis (2024). fftfreq - get exact Matlab FFT frequencies (https://www.mathworks.com/matlabcentral/fileexchange/113240-fftfreq-get-exact-matlab-fft-frequencies), MATLAB Central File Exchange. 检索来源 .

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创建方式 R2020a
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1.0.2

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1.0.1

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1.0.0