Title :
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
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;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205604
