Difference equation to FIR filter coefficients

1. What is the difference equation for an FIR filter?
2. What are the coefficients of an FIR filter?
3. What is the difference equation of IIR filter?

What is the difference equation for an FIR filter?

Save this question. Show activity on this post. y[n]=y[n−1]+0.5x[n]−0.5x[n−2].

What are the coefficients of an FIR filter?

The term h[k] is the impulse response of the FIR filter, it is also referred to as FIR coefficients. Each tap in an FIR filter is a multiply-accumulate (MAC) unit which contains a register, a multiplier, and an adder as shown in Figure 1.

What is the difference equation of IIR filter?

By definition, the impulse response is the system output when the input is the unit impulse x[n] = δ[n]. In other words, the impulse response function satisfies the following recursive relationship: h[n] = ah[n − 1] + 2δ[n] .