Electrical audio signal processing systems and devices – Loudspeaker feedback
Patent
1991-09-25
1993-01-19
Isen, Forester W.
Electrical audio signal processing systems and devices
Loudspeaker feedback
381 59, 381 76, H04R 300
Patent
active
051812517
ABSTRACT:
In order to obtain for electrodynamic loudspeakers, on the one hand, the energy-favorable acoustical enhancement by the bass reflex principle and, on the other hand, to be able to use the motional control of the diaphragm of the electrodynamic loudspeaker by controlling such by means of an amplifier exhibiting negative output impedance, it is proposed to compensate the thus resulting unfavorable frequency characteristic by a forwardly connected circuit which generates an inverse characteristic with respect to the unfavorable frequency characteristic.
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patent: 5031500 (1991-07-01), Koike et al.
International Search Report.
"Loudspeakers in Vented Boxes: Part II", by A. N. Thiele, Journal of the Audio Engineering Society, vol. 19, No. 6, Jun. 1971, pp. 192-204.
"Vented-Box Loudspeaker Systems", by Richard H. Small, Journal of the Audio Engineering Society, Jun. 1973.
"Loudspeakers in Vented Boxes", by A. N. Thiele, Journal of the Audio Engineering Society, May 1971.
Schultheiss Roger
Zwicky Paul
Isen Forester W.
Studer Revox AG
Tong Nina
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