Hi,

This is a question relating to DSP. I wasn't sure what section to put it in. (move it if you so wish)

I have the transfer function:

0.5 - 0.3 z-1

------------- = H(z)

1 + 0.25 z -1

I need to obtain a difference equation ( i.e in the form y(z)= )

My problem is I cant find in text books, or on the web, a simple explanation for converting said transfer function to a difference equation. (please note this is a difference equation not a differential equation).

I found the following link to be the most useful thing so far, (if you explore the site a bit). But I still don't understand how the process is done.

[

http://ccrma.stanford.edu/~jos/fp3/Z_Transform_Difference_Equations.html ]

Thanks for any help anyone can provide,

Bob