Electrical audio signal processing systems and devices – Acoustical noise or sound cancellation – Adjacent ear
Patent
1982-07-13
1984-01-17
Rubinson, G. Z.
Electrical audio signal processing systems and devices
Acoustical noise or sound cancellation
Adjacent ear
1791155H, 1791155VC, 381100, H04R 300
Patent
active
044265522
ABSTRACT:
In sound generating systems, it has been ascertained that various factors cause spurious, audible emanations when transducers of reasonable size and cost are driven in complex motions characteristic of typical high fidelity audio reproduction. In a typical system in which different transducers are used for different frequency ranges, the spurious emanations are reduced by change of amplitude or frequency or both, without affecting transducer performance, to levels at which they are substantially inaudible. Means are coupled to each speaker in a multispeaker system for compensating for mass, compliance and damping. Further, crossover means are provided for introducing opposing signal components in a crossover range between two adjacent range speakers such that opposing signal components are acoustically cancelled in the composite output.
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Bennett M. Owen
Cowans Kenneth W.
George Keith E.
Rubinson G. Z.
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