A dedicated processor for time-varying digital audio filters

Author

Nikolaidis, S.S. ; Mourjopoulos, J.N. ; Goutis, C.E.

Author_Institution

Dept. of Electr. Eng., Patras Univ., Greece

Volume

40

Issue

7

fYear

1993

fDate

7/1/1993 12:00:00 AM

Firstpage

452

Lastpage

455

Abstract

A dedicated processor for realizing variable digital filters suitable for audio applications is presented. Its architecture is based on the approximation of the time-varying system by finite number of invariant states. A technique which reduces digital filter transfer function distortions caused when filter parameters are changed over time is employed. The proposed transition model is realized by a dedicated unit having a pipeline architecture and allowing a very large number of variable filters to be implemented in real-time

Keywords

Hi-Fi equipment; digital filters; digital signal processing chips; feedback; pipeline processing; real-time systems; time-varying networks; transfer functions; dedicated processor; error feedback loop; pipeline architecture; real-time; time-varying digital audio filters; transfer function distortions; transition model; variable digital filters; Band pass filters; Circuits; Digital filters; Digital signal processing; Interpolation; Laboratories; Pipelines; Sampling methods; Time varying systems; Transfer functions;

fLanguage

English

Journal_Title

Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7130

Type

jour

DOI

10.1109/82.238375

Filename

238375