How to derive filter design (with parameters) from existing FIR weights

1. Which of the following is the first method proposed for design of FIR filters?
2. What does FIR refer to in digital filter design?
3. What is FIR filter coefficients?

Which of the following is the first method proposed for design of FIR filters?

1. Which of the following is the first method proposed for design of FIR filters? Explanation: The design method based on the use of windows to truncate the impulse response h(n) and obtaining the desired spectral shaping, was the first method proposed for designing linear phase FIR filters.

What does FIR refer to in digital filter design?

Finite impulse response models are based on finite impulse response (FIR) filters, which are a type of a signal processing filter whose impulse response is of finite duration because it settles to zero in finite time.

What is FIR filter coefficients?

An FIR filter is designed by finding the coefficients and filter order that meet certain specifications, which can be in the time domain (e.g. a matched filter) and/or the frequency domain (most common). Matched filters perform a cross-correlation between the input signal and a known pulse shape.