Design a highpass FIR filter using the Parks–McClellan algorithm to satisfy the spec- ifications: ω s = 0.6 π , ω p = 0.75 π , A s = 50 dB, and A p = 0.5 dB. Graph all relevant filter response plots.
Specifications of a multiband digital filter are given below:
| H ( e j ω ) |= ±0.001, 0 ≤ | ω |≤ 0.3 π
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| H ( e j ω ) |= 0.5 ± 0.005, 0.4 π ≤ | ω |≤ 0.7 π
| H ( e j ω ) |= 1 ± 0.01. 0.75 π ≤ | ω |≤ π
Design a linear-phase FIR filter using the Parks–McClellan algorithm.