Xcorr

Using MATLAB 'xcorr()' to Find a Signal Hidden Behind Noise

Using MATLAB 'xcorr()' to Find a Signal Hidden Behind Noise
  1. How to use Xcorr in Matlab?
  2. How to remove noise from signal in matlab?

How to use Xcorr in Matlab?

r = xcorr( x ) returns the autocorrelation sequence of x . If x is a matrix, then r is a matrix whose columns contain the autocorrelation and cross-correlation sequences for all combinations of the columns of x . r = xcorr(___, maxlag ) limits the lag range from -maxlag to maxlag for either of the previous syntaxes.

How to remove noise from signal in matlab?

You can use linear filtering to remove certain types of noise. Certain filters, such as averaging or Gaussian filters, are appropriate for this purpose. For example, an averaging filter is useful for removing grain noise from a photograph.

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