Q)Design a Discrete Time Low Pass Filter for a signal. Butterworth Filter. Chebeyshev Filter The specifications are:(Voice Signal) 1) Passband Fp = 4 kHz, with 0.2 dB ripple; Stopband FS= 4.5 kHz, with 45 dB ripple. Sampling Frequency Fs = 22 kHz. (Use For Both Filters). 2) passband ripple = 0.2 stopband ripple -45 passband frequency - 1300 stopband frequency = 1500 sampling frequency = 10000. (Chebeyshev Filter) 3) Passband ripple = 0.5 stopband ripple = 50 passband frequency = 1200 stopband frequency = 2400 Sampling Frequency= 10000. (Butterworth filter)."

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Filter

A filter is a device or process which removes some of the unwanted features or components like frequencies from a signal in signal processing. The feature of filters is the complete or partial suppression of some part of the signal, and filtering is a class of signal processing. This most often means removing some frequency bands or some frequencies. In the frequency domain, the filters do not exclusively act, especially in the image processing field many other targets for filtering exist. Without having to act in the frequency domain, the correlations can be removed for certain frequency components and not for others. The filters are widely used in electronics and telecommunication, in television, radio, radar, audio recording, music synthesis, control systems, computer graphics, and image processing.