Question

different b/w digital filter and analog filter with the help of eg​

Answer 1

Answer:

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Explanation:

Analog Filter

1 Analog filters are used for filtering analog signals.

2 Analog filters are designed with various components like resistor, inductor and capacitor

3 Analog filters less accurate & because of component tolerance of active components & more sensitive to environmental changes.

4 Less flexible

5 Filter representation is in terms of system components.

6 An analog filter can only be changed by redesigning the filter circuit.

Digital Filter

1 Digital filters are used for filtering digital sequences.

2 Digital Filters are designed with digital hardware like FF, counters shift registers, ALU and software s like C or assembly language.

3 Digital filters are less sensitive to the environmental changes, noise and disturbances. Thus periodic calibration can be avoided. Also they are extremely stable.

4 These are most flexible as software programs & control programs can be easily modified. Several input signals can be filtered by one digital filter.

5 Digital filters are represented by the difference equation.

6 A digital filter is programmable, i.e. its operation is determined by a program stored in the processor's memory. This means the digital filter can easily be changed without affecting the circuitry (hardware).