Introduce According to the length of their impulse response sequences the digital filters are usually classified as o Infinite impulse response(iir)filters ∑ 6z H( 2)三 1+>a,z k=1 o Finite impulse response(FIR) filters H()=∑n)=n 2021年1月27日1时46分
2021年1月27日1时46分 Introduce According to the length of their impulse response sequences, the digital filters are usually classified as: ◆Infinite impulse response (IIR) filters ◆Finite impulse response (FIR) filters 0 1 ( ) 1 M r r r N k k k b z H z a z − = − = = + 1 0 ( ) ( ) N n n H z h n z − − = =
Introduce O An important step in the development of a digital filter is the determination of a realizable transfer function H(z) approximating the given frequency response specifications. the process of deriving the transfer function H(z)is called digital filter design 2021年1月27日1时46分
2021年1月27日1时46分 Introduce An important step in the development of a digital filter is the determination of a realizable transfer function H(z) approximating the given frequency response specifications. The process of deriving the transfer function H(z) is called digital filter design
Introduce o In Chapter 5, we outlined a variety of basic structures for the realization of iir and fir transfer functions o In this chapter we consider the iir digital filter design problem. the design of FIR digital filters is discussed in Chapter 7. 2021年1月27日1时46分
2021年1月27日1时46分 Introduce In Chapter 5, we outlined a variety of basic structures for the realization of IIR and FIR transfer functions. In this chapter, we consider the IIR digital filter design problem. The design of FIR digital filters is discussed in Chapter 7
Content o Digital Filter specifications o Design of analog filters o Impulse Invariance Method of Lowpass iIr Digital Filters design o Bilinear transformation Method of Lowpass IIR Digital Filter Design o Design of Highpass Bandpass and Bandstop Digital Filters 2021年1月27日1时46分
2021年1月27日1时46分 Content ⚫ Digital Filter Specifications ⚫ Design of analog filters ⚫ Impulse Invariance Method of Lowpass IIR Digital Filters Design ⚫ Bilinear Transformation Method of Lowpass IIR Digital Filter Design ⚫ Design of Highpass,Bandpass and Bandstop Digital Filters
6.1 Concepts on Digital Filter There are two major issues that need to be answered before one can develop the digital transfer function G(z) a The first issue is the development of a reasonable filter frequency response specification from the requirements of overall system in which the digital filter is to be designed a The second issue is to determine whether an fir or iir digital filter is to be designed 2021年1月27日1时46分
2021年1月27日1时46分 6.1 Concepts on Digital Filter ◆There are two major issues that need to be answered before one can develop the digital transfer function G(z). The first issue is the development of a reasonable filter frequency response specification from the requirements of overall system in which the digital filter is to be designed. The second issue is to determine whether an FIR or IIR digital filter is to be designed