Short time fft simulink

1. What is short FFT?
2. How do you do a short-time Fourier transform in Matlab?
3. What is FFT length in STFT?
4. What is the difference between FFT and STFT?

What is short FFT?

The short-time Fourier transform (STFT), is a Fourier-related transform used to determine the sinusoidal frequency and phase content of local sections of a signal as it changes over time.

How do you do a short-time Fourier transform in Matlab?

s = stft( x ) returns the Short-Time Fourier Transform (STFT) of x . s = stft( x , fs ) returns the STFT of x using sample rate fs . s = stft( x , ts ) returns the STFT of x using sample time ts . s = stft(___, Name=Value ) specifies additional options using name-value arguments.

What is FFT length in STFT?

512 (default) | positive integer. FFT length, specified as a positive integer. This property determines the length of the STFT output (number of rows).

What is the difference between FFT and STFT?

FFT has a resolution of 2048 lines, Blackman window, and 50% overlap and STFT also has Block size 2048, FFT size 16K, Blackman window used, and 50% overlap. As we can see, STFT performs better with the same block size (but more calculated lines). We improved frequency resolution for the same amount of scooped data.