DSP 실험 LAB9 (IIR Filter Design)
- 최초 등록일
- 2013.10.18
- 최종 저작일
- 2013.06
- 10페이지/
한컴오피스
- 가격 2,000원
목차
1. Design a lowpass IIR filter with the following specifications:
2. Design a bandpass IIR filter with the following specifications:
3. Design a highpass IIR filter with the following specifications:
4. In a speech recording system with a sampling frequency of 10,000 Hz, the speech is corrupted by random noise. To remove the random noise while preserving speech information, the specification is given:
5. In problem 4, if we use a Chebysehv IIR filter with the following specifications:
본문내용
Print the lowpass IIR filter coefficients and plot the frequency responses using MATLAB. MATLAB>>freqz(bLP,aLP,512,8000); axis([0 4000 –40 1]); % sampling rate=8000 Hz Label and print your graph.
coding
format long
fs=8000;
[B A]=lp2lp([1],[1 1], sqrt(87.73069^2))
[b a]=bilinear(B,A,fs)
freqz(b,a,512,8000);
axis([0 4000 -40 1]);
구한 값
Wdp = 800*pi, Wds = 1600*pi, Wap = 87.73069, Was = 175.4667
결과값
B = 87.730689999999996
A = 1.000000000000000 87.730689999999996
b = 0.0*************7 0.0*************7
a = 1.000000000000000 -0.9*************5
참고 자료
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