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fftfreq
DFT sample frequencies
Syntax
f = fftfreq(n) f = fftfreq(n, d)
Description
Returns the discrete Fourier Transform sample frequencies. For a signal of length `n` with sample spacing `d`, the frequencies are `[0, 1, ..., n/2-1, -n/2, ..., -1] / (d*n)` for even `n`.
Parameters
| Name | Description |
|---|---|
| n | Window length (number of samples) |
| d(optional) | Sample spacing (default: 1.0) |
Returns
Array of sample frequencies
Examples
Try It
>> fftfreq(8, 0.1)