Inﬁnite Impulse Response Filters
• • • •
Inﬁnite impulse response ﬁlter structures: direct form I, direct form II, cascade, and parallel Bilinear transformation for ﬁlter design Sinusoidal waveform generation using difference equation Filter design and utility packages Programming examples using TMS320C6x and C code
The ﬁnite impulse response (FIR) ﬁlter discussed in Chapter 4 has no analog counterpart. In this chapter we discuss the inﬁnite impulse response (IIR) ﬁlter that makes use of the vast knowledge already acquired with analog ﬁlters. The design procedure involves the conversion of an analog ﬁlter to an equivalent discrete ﬁlter using the bilinear transformation (BLT) technique....