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Poles and magnitudes of rational approximations to the transfer functions Tan. (A) Poles of 16-pole (black squares) and 6-pole (red crosses) approximations of Ten. (B) Magnitude of 16-pole (black) and 6-pole approximations of Ten vs. frequency. (C) Same as (A) for Tin. (D) Same as (B) for Tin. (E) Same as (A) for Trn. (F) Same as (B) for Trn. (G) Same as (A) for Tsn. (H) Same as (B) for Tsn.
