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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