Length of signal - matlab

1. What is the length of signal?
2. How do you find the duration of a signal?
3. How do you find the length of a FFT?
4. How do you find the length of a curve in MATLAB?

What is the length of signal?

Signal length is either the total number of points the vector containing it has, or if you also have a time points vector, the difference between the last and first time point. Zero padding is done by simple concatenation, e.g. signal_padded = [zeros (N,1); signal; zeros (N,1)];

How do you find the duration of a signal?

To calculate the time interval of a known frequency, simply divide 1 by the frequency (e.g. a frequency of 100 Hz has a time interval of 1/(100 Hz) = 0.01 seconds; 500 Hz = 1/(500Hz) = 0.002 seconds, etc.)

How do you find the length of a FFT?

FR = Fmax/N(Bins)

For a 44100 sampling rate, we have a 22050 Hz band. With a 1024 FFT size, we divide this band into 512 bins. FR = 22050/1024 ≃ 21,53 Hz. Basically, the FFT size can be defined independently from the window size.

How do you find the length of a curve in MATLAB?

The arc length formula says the length of the curve is the integral of the norm of the derivatives of the parameterized equations. ∫ 0 3 π 4 cos 2 ( 2 t ) + sin 2 ( t ) + 1 d t . Define the integrand as an anonymous function. f = @(t) sqrt(4*cos(2*t).