Finite Impulse Response Filter Design - Digital Signal Processing: Fundamentals and Applications - page 292

7.8. Consider an FIR highpass filter design with the following specifications:
Stopband ¼ 0 e 1,500 Hz
Passband ¼ 2,000 e 4,000 Hz
Passband ripple ¼ 0.02 dB
Stopband attenuation ¼ 60 dB
Sampling rate ¼ 8,000 Hz
Determine the following:
a. window method
b. length of the FIR filter
c. cutoff frequency for the design equation
7.9. Consider an FIR bandpass filter design with the following specifications:
Lower cutoff frequency ¼ 1,500 Hz
Lower transition width ¼ 600 Hz
Upper cutoff frequency ¼ 2,300 Hz
Upper transition width ¼ 600 Hz
Passband ripple ¼ 0.1 dB
Stopband attenuation ¼ 50 dB
Sampling rate: 8,000 Hz
Determine the following:
a. window method
b. length of the FIR filter
c. cutoff frequencies for the design equation
7.10. Consider an FIR bandstop filter design with the following specifications:
Lower passband ¼ 0 e 1,200 Hz
Stopband ¼ 1,600 e 2,000 Hz
Upper passband ¼ 2,400 e 4,000 Hz
Passband ripple ¼ 0.05 dB
Stopband attenuation ¼ 60 dB
Sampling rate ¼ 8,000 Hz