Method and apparatus for non-linear signal processing with reduc

Details Method and apparatus for non-linear signal processing with reduc Method and apparatus for non-linear signal processing with reduc

1992-06-01

1994-09-20

Mai, Tan V.

Boots, shoes, and leggings

36472416, G06F 1531

Patent

active

053495462

ABSTRACT:
In a sampled data system with limited bandwidth where the output of a table memory 34 is multiplied with the sampled data in a multiplier 36 to produce a non-linear function, the process ordinarily produces harmonics that fold back into the passband of the system, thus causing artifacts in the processed data. By filtering the sampled data in a low pass filter 30 before addressing the table memory 34, the non-linearity of the function is progressively reduced toward the upper band limit. This reduces the production of harmonics and the resultant artifacts.

REFERENCES:
patent: 4758893 (1988-07-01), Lippel
patent: 4766563 (1988-08-01), Fujimoto
patent: 4786968 (1988-11-01), Kutner
patent: 4812903 (1989-03-01), Wagensonner et al.
patent: 4825297 (1989-04-01), Fuchberger et al.

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