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Table 1 Comparison of evaluated errors in (29).

From: A New Method for Least-Squares and Minimax Group-Delay Error Design of Allpass Variable Fractional-Delay Digital Filters

Method

(%)

(%)

Design time (seconds)

Deng's method in Section 2,

0.242

0.03145

0.001205

0.0001788

0.38

Lee, Caccetta, and Rehbock's method [23], LS design,

0.0992

0.005276

0.002199

0.0000718

3.19

Proposed LS design,

0.1474

0.004137

0.002312

0.0000707

28.36

Proposed LS design,

0.04464

0.001927

0.000724

0.0000543

28.13

Lee, Caccetta and Rehbock's method [23], WLS design,

0.155

0.002836

0.00307

0.0000838

58.63

Proposed minimax design,

0.1964

0.002966

0.003235

0.0000834

148.76

Proposed minimax design,

0.0664

0.001189

0.001141

0.0000365

196.56