## Cross correlation

Purpose

Description

Macro Synopsis

Modules

Related Functions

References

### Purpose

Cross correlation

### Description

"Cross correlation" creates a new signal by performing the cross correlation of two signals x and y defined by

Internally, a frequency-domain algorithm based on the Fast Fourier
transform is used for calculating the discrete cross correlation.
**Warning:** *Note that if the input signals have different x-axis scales (sampling periods), the signal with the largest scale will be adapted automatically by interpolating between successive sample points. The type of interpolation can be set in the Basic Options menu.*

### Macro Synopsis

`rxy = CrossCorr([x,y]);`

signal rxy,x,y;

### Modules

Student, Professional

### Related Functions

Autocorrelation, Convolution.

### References

Oppenheim/Schafer [3], Conover
[11], Graybill [12], Hollander/Wolfe
[13]