Digital filter combination for interpolation

Details Digital filter combination for interpolation Digital filter combination for interpolation

1997-12-04

2008-07-29

Malzahn, David H. (Department: 2787)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

07406492

ABSTRACT:
A digital filter combination for interpolating primary sample values of a sampled signal using an mth-order discrete-time filter and a kth-order continuous time interpolation filter, with m≧3 and k≧2, wherein the discrete-time filter forms n secondary sample values from at least m+1 primary sample values at equal time intervals, with n≧m, and the continuous-time interpolation filter forms from at least part of the n secondary sample values an interpolated value whose temporal position with respect to that of the primary sample values is predeterminable by a normalized interpolating instant dp=tin/T, where tinis the absolute interpolating instant, and T is the period of the primary sampling rate.

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patent: 0220880 (1987-05-01), None
patent: 0262647 (1988-04-01), None
Electronic Letters, vol. 26, No. 19,Programable Fractional Sample Delay Filter with Lagrange Interpolation, Sep. 13, 1990.

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