Digital Filter

Question 1

is a system that performs mathematical operations on a discrete and sampled tome signal, so as to enhance or reduce certain aspects of that particular signal as may be necessary.

Answer 1

Digital Filter

Question 2

High Accuracy, Linear Phase (FIR Filters), No Drift Due to Component Variations, Flexible, Adaptive Filtering Possible

Answer 2

Digital Filters

Question 3

Less Accuracy-Component Tolerances, Non-linear phase, Drift due to component variations, adaptive filters difficult

Answer 3

Analog Filters

Question 4

Two fundamental types of digital filters

Answer 4

Finite Impulse Response (FIR)
Infinite Impulse Response (IIR)

Question 5

Characteristics of FIR Filters

Answer 5

Impulse Response has a finite duration (N Cycles)
Linear Phase, Constant Group Delay (N Must be Odd)
No Analog Equivalent
Unconditionally Stable
Can be adaptive

Question 6

Characteristics of IIR Filters

Answer 6

Uses feedback (Recursion)
Impulse Response has an Infinite Duration
Potentially Unstable
Non-linear Phase
More Efficient than FIR Filters

Question 7

IIR filters are generally implemented in two-pole sections called

Answer 7

biquads

Question 8

IIR Filter Design Techniques

Answer 8

Impulse Invarient Transformation Method
Bilinear Transformation
Matched z-transform Method
CAD Methods