Tunable analog loudspeaker crossover network

Author

Rapoport, Eduardo ; Baruqui, F.A.P. ; Petraglia, Antonio

Author_Institution

Program of Electr. Eng., Fed. Univ. of Rio de Janeiro, Brazil

Volume

1

fYear

2003

fDate

25-28 May 2003

Abstract

This paper proposes a new implementation of tunable analog loudspeaker crossover networks suitable to monolithic integrated circuit (IC) realizations. The crossover frequency is linearly set by tuning voltages to adequate the audio reproduction to different environments and loudspeaker characteristics over the entire audio spectrum. Based on structurally allpass networks, the proposed approach presents very low sensitivity to IC device mismatching. This is verified by simulation and comparison with an alternative design. Details of the tuning procedure are provided. Experimental verification of the structure low sensitivity and tuning capabilities is also shown.

Keywords

active filters; all-pass filters; analogue integrated circuits; analogue processing circuits; audio signal processing; circuit tuning; loudspeakers; IC device mismatching; active filter; all-pass network; audio signal; monolithic integrated circuit; tunable analog loudspeaker crossover network; Chebyshev approximation; Circuit optimization; Filters; Frequency response; Loudspeakers; Monolithic integrated circuits; Transfer functions; Tunable circuits and devices; Tuning; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on

Print_ISBN

0-7803-7761-3

Type

conf

DOI

10.1109/ISCAS.2003.1205604

Filename

1205604