Adaptive room response equalizer

Author

Kerendian, Farzan

Author_Institution

Utah Univ., Salt Lake City, UT, USA

fYear

1994

fDate

27-29 Sep 1994

Firstpage

469

Lastpage

475

Abstract

The objective of this project was to design a system to use magnitude normalization as a method of adaptive equalization. The system is targeted at equalizing a room response. The method used is to decompose the signal into its frequency components (N frequency bands) and normalize each band to obtain a flat frequency response of the entire signal path. This path consists of the amplifier, the speaker box and the room. This paper presents four methods of magnitude normalization. Normalizer -cell2.2- was selected as the best normalizing element for this project. This cell is implemented digitally on a microcontroller. The stability of the system is discussed in the paper which shows a trade off between the rate of convergence and the deviation from the optimal solution achievable by the hardware. Finally, other implementations of the system are discussed

Keywords

acoustic signal processing; adaptive equalisers; audio acoustics; audio systems; convergence; feedback; frequency response; stability; adaptive equalization; adaptive room response equalizer; cell2.2; convergence rate; magnitude normalization; microcontroller implementation; stability; Acoustic noise; Adaptive equalizers; Adaptive filters; Filtering; Frequency response; Hardware; Loudspeakers; Preamplifiers; Signal processing; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

WESCON/94. Idea/Microelectronics. Conference Record

Conference_Location

Anaheim , CA

ISSN

1095-791X

Print_ISBN

0-7803-9992-7

Type

conf

DOI

10.1109/WESCON.1994.403551

Filename

403551