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I. IIR Filter Order Selection
��� IIR Filter�뒗 Filter 李⑥닔瑜� �엫�쓽濡� �젙�븯�뒗 寃껋씠 �븘�땲�씪 Filter�쓽 Spec�뿉 �뵲�씪 理쒖쟻�쓽 Filter 李⑥닔瑜� 寃곗젙�븯�뿬 �궗�슜�빐�빞 �븳�떎.
1. buttord
- Butterworth Filter order selection
�뼳 湲곕낯 �삎�깭
[n,wn] = buttord(wp, ws, Rp, Rs)
n : IIR Filter order
wn : Normalized Cutoff Frequency (where, 1 corresponds to radians/sample)
wp : Normalized Passband Edge Frequency (where, 1 corresponds to radians/sample)
ws : Normalized Stopband Edge Frequency (where, 1 corresponds to radians/sample)
Rp : Passband Ripple (Rp dB)
Rs : Stopband Attenuation (Rs dB)
For example,
Lowpass : wp = 0.1, ws = 0.2
Highpass : wp = 0.2, ws = 0.1
Bandpass : wp = [0.2 0.7], ws = [0.1 0.8]
Bandstop : wp = [0.1 0.8], ws = [0.2 0.7]
2. Cheb1ord / Cheb2ord
- Chebyshev Filter Type I / Type II order selection
�뼳 湲곕낯 �삎�깭
[n,wn] = cheb1ord(wp, ws, Rp, Rs) % Type I
[n,wn] = cheb2o���(�깮�왂)
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IIR Filter Design Using MATLAB.hwp
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