The first experiment performed in DSPP lab was convolution and correlation with the help of c language. we used input signal x(n) of length L and h(n) of M .Linear convolution gives output signal of length L+M-1.Where as circular convolution gives max(L,M). Correlation is used to find degree of similarity between two signals.
Perfect.But elaborate other properties of convolution also.
ReplyDeleteI think circular convolution is for periodic sequence only
I didn't mention whether the above methods are periodic or not . Yes, you are correct circular convolution is done for periodic signal using circular shifting of signal and linear convolution do not require signal to be periodic .
DeleteConvolution is process of flipping > shifting > multiply > addition of input signal where,y(n)=x(n)*h(n). Use to find response of the system .
Auto-correlation of delayed input signal is same as Auto-correlation of original signal. In Auto-correlation y(0) gives energy of signal. An Auto-correlation signal is EVEN signal.
Thank you for your comment...
DeleteShort and simple!
ReplyDeleteInformation was good to refer.
ReplyDeleteGood content
ReplyDeleteCorrelation algorithms are popularly used in speech recognition systems consisting of a pre stored voice in the database that can be used for comparison.
ReplyDelete