Electrical audio signal processing systems and devices – Including frequency control
Patent
1985-05-30
1987-11-24
Isen, Forester W.
Electrical audio signal processing systems and devices
Including frequency control
381 96, H03G 500
Patent
active
047093919
ABSTRACT:
An arrangement for converting an electric signal into an acoustic signal (y/t) or vice versa, comprises an electroacoustic transducer (2) and means (3) for reducing distortion in the output signal of the arrangement, which distortion is caused by the electroacoustic or acoustoelectric conversion performed by the transducer.
The means comprise a non-linear network (3', 3" or 3'" in FIGS. 3; 43', 43" or 43'" in FIG. 4). The non-linear network is arranged for reducing non-linear distortion by compensating for at least a second or higher order distortion component in the output signal of the arrangement. The network may comprise at least two parallel circuit branches (15a, 15b in FIG. 3; 47a, 47b in FIG. 4). At least one of the circuit branches (15b in FIG. 3; 47b in FIG. 4) compensates for non-linear distortion of the second or higher order.
REFERENCES:
patent: 3988541 (1976-10-01), Boast
patent: 4113983 (1978-09-01), Steel
patent: 4340778 (1982-07-01), Cowans et al.
Kaizer Adrianus J. M.
Van Leeuwen Gerrit H.
Briody Thomas A.
Isen Forester W.
Oisher Jack
Streeter William J.
U.S. Philips Corporation
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