Sampling

Sampling and recovery using matlab

Sampling and recovery using matlab
  1. How does MATLAB reduce sampling rate?
  2. How does MATLAB calculate sampling rate?

How does MATLAB reduce sampling rate?

y = downsample( x , n ) decreases the sample rate of x by keeping the first sample and then every n th sample after the first. If x is a matrix, the function treats each column as a separate sequence. y = downsample( x , n , phase ) specifies the number of samples by which to offset the downsampled sequence.

How does MATLAB calculate sampling rate?

The sampling frequency or sampling rate, fs, is the average number of samples obtained in one second (samples per second), thus fs = 1/T. To sample a signal in MATLAB, generate a time vector at the appropiate rate, and use this to generate the signal. Plot using the stem function.

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