matlab fft function and its window type

Question

Jae wook Oh 2021-11-13

回答： Tina 2021-11-15

Hi.

I'm using the matlab fft function and got curious about what type of window the function employs as default.

I know from previous questions and answers that to use a window, I would have to multiply the window to the data before using fft function.

Well if I don't multiply anything, does it use its default window of any type or maybe it doesn't use any window(rectangular window)?

thanks in advance.

Mathieu NOE 2021-11-15

hello

by default the fft is done on the raw data without window , also referred as "rectangular" window.

it's up to you to apply a window to the data before doing the fft

Answer 1

Tina 2021-11-15

if you are not specifying any window then it uses rectangular window as default