MATLAB: Sample a continuous signal with Sampling frequency

sample frequency

I am wanting to sample a signal between t = 0 and say t = 1s.

Would I do this by only looking at the points of the signal that correspond to the sampling frequency I decide on?

Best Answer

‘Would I do this by only looking at the points of the signal that correspond to the sampling frequency I decide on?’

Yes. In a sampled signal, those are the only data you can look at, since they are the only data that exist. Your signal must be sampled at constant intervals.

Related Solutions

MATLAB: I need to under sample, perfect sample, and over sample a sinusoidal signal.

Hi Aman,

As the frequency of signal is 100Hz(f) the sampling frequency:

fs < 2f - under sampling
fs = 2f - perfect sampling
fs >2f - over sampling

To be able to sample signals with this sampling frequency and plot them in MATLAB you could use the following simple code:

t = 0:1/fs:1 % for every 1/fs second a sample of the sine wave would be taken
y = sin(2*pi*100*t) % input signal
plot(t,y)

By changing fs according to your requirement you could plot under sampled, perfectly sampled and over sampled signals.

Hope it helps!

MATLAB: Frequency and Sampling Frequency

This is more a philosophical question than a mathematical one.

The frequency of the original signal remains ‘fs’ regardless, The frequency of the generated tone is whatever is passed to the sound function, here either ‘fs’ or ‘2*fs’.

At least that is the way I interpret it.

Best Answer

Related Solutions

MATLAB: I need to under sample, perfect sample, and over sample a sinusoidal signal.

MATLAB: Frequency and Sampling Frequency

Related Question