Abstract
The finite-impulse response (FIR) filter has revolutionised signal processing. It can be designed to have properties that an analogue filter can never achieve. FIR filters are preferred for many applications due to their linear phase and stability properties. The FIR filter is analysed and conditions for linear phase are first given. Then several methods for designing FIR filters are shown. These include the frequency sampling method, interpolation method and optimal design. It is shown that FIR filters can achieve performance with highly steep frequency domain transition edges and minimal passband ripple whilst still maintaining phase linearity.
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Moir, T.J. (2022). FIR Filter Design. In: Rudiments of Signal Processing and Systems. Springer, Cham. https://doi.org/10.1007/978-3-030-76947-5_8
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DOI: https://doi.org/10.1007/978-3-030-76947-5_8
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