given this block diagram:
can someone please clarify how to interpret the second delay (the one prior to $Y$)? to convert this block diagram into a simple equation, I interpret the diagram as:
- bottom path: take input at $n$, multiply by $-1$ and delay by $1$, gives: $-1x[n-1]$
- top path: take input at $n$ and sum it by result of bottom path, gives: $x[n] + -1x[n-1]$
- take sum of bottom and top path and delay it (?) - this is the part I'm confused about. it doesn't make sense to write: $(x[n] + -1x[n-1])[n-1]$ which is what the diagram looks like to me.
what is the right way to read this diagram?