Correction to "Recursive and non-recursive realization of digital filters designed by frequency sampling techniques"
L. R. Rabiner, Ronald W. Schafer · IEEE Transactions on Audio and Electroacoustics · 1972
The purpose of this correspondence is to correct some inaccuracies in the above paper. Specifically, we refer to the results in the Section "Linear Phase Type 2 Filters" (pp. 205-207). Although the results of that section are correct for the conditions stated, the constraints on phase delay andH_{(N-1)/2}are more restrictive than necessary. Therefore, we offer the following as a correction to the original section.