Help please! How can I make this work??

[HybridTeory]

I've implemented the derivative function:

p[n]=2y[n-2]-y[n-1]-2y[n]-y[n+1]+2y[n+2]

using the shift register in a for loop, where I enter the x[n] signal.

Now i have to make this sum using the other function inside the sum...

s[n]=SUM(from k=1 to 16)(p[n-k+1]*(16-k+1))

and I don't now how to do it!!

Can anybody help?

[dan_u]

Try using a for loop with 16 wired to the N terminal and use a shift register (initialized to 0) for the sum. In each iteration, add p[n-k+1]*(16-k+1) to the value of the shift register. As you already have the function p[n], this should be straightforward.
EDIT: a little hint: as the loop counter is 0-based, you might have to add +1 to i in order to get your k.

Message Edited by dan_u on 09-22-2006 12:01 AM