Zusammenfassung
This paper presents a synthesis method for
infinite-impulse response (IIR) digital filter
structures using genetic programming with automatically
defined functions (GP-ADF). In the proposed method,
digital filter structures are represented as
S-expressions with subroutines, which are written
directly from the set of difference equations. This
paper also shows the condition for the constructing the
S-expressions that represent the filter structures
without delay-free loops. Numerical examples synthesize
two-filter structures: the low-coefficient sensitivity
fourth-order filter structure and the low-output
roundoff noise second-order filter structure.
- algorithms,
- automatically
- computability,
- defined
- difference
- digital
- effects,
- equations,
- errors,
- evolutionary
- filter
- filter,
- filters,
- fitness
- fourth-order
- function
- functions,
- genetic
- global
- iir
- infinite-impulse
- low-coefficient
- low-output
- matrices,
- matrix
- measure,
- method,
- noise,
- optimization,
- programming,
- representation,
- response
- roundoff
- s-expressions,
- sensitivity,
- structures,
- subroutines,
- synthesis
- transfer
- wordlength
Nutzer