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.
Do FIR filters have zeros?
IIR filters have poles and zeroes, and FIR filters have only zeroes.