Arrangement to correct the linear and nonlinear transfer behavio

Details Arrangement to correct the linear and nonlinear transfer behavio Arrangement to correct the linear and nonlinear transfer behavio

1992-04-09

1995-08-01

Isen, Forester W.

Electrical audio signal processing systems and devices

Loudspeaker feedback

381 98, 381 59, H04R 300

Patent

active

054386250

ABSTRACT:
This invention regards an arrangement to correct the linear and nonlinear transfer behavior of electro-acoustical transducers, consisting of an electro-acoustical transducer, a distortion-reduction network connected to its input terminals, and a support system to fit the distortion-reduction network to the transducer. The distortion-reduction network shows nonlinear transfer characteristics obtained from modelling the transducer and thus changes the electrical signal such that the nonlinear effects of the network compensate for the nonlinear behavior of connected transducer. The result is an overall system with reduced distortion and improved linear transfer behavior. A fitting technique and system is used to change the parameters of the electrical network automatically to fit the actual transfer characteristics of the distortion reduction system to the transducer. Several mechanisms, unique to each transducer, are responsible for generation of nonlinear distortion.

REFERENCES:
patent: 4709391 (1987-11-01), Kaizer et al.
patent: 5181251 (1993-01-01), Schultheiss et al.
patent: 5185805 (1993-02-01), Chiang
Hall, Design Considerations for an Accelerometer-Based Dynamic Loudspeaker Motional Feedback Sytem.
Klippel, Nonlinear Large-Signal Behavior of Electrodynamic Loudspeakers at Low Frequencies.
Kaizer, Modeling of the Nonlinear Response of an Electrodynamic Loudspeakers by a Volterra Series Expansion.

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