Roundoff Error Analysis of Digital Filters
Udo Zölzer · Journal of the Audio Engineering Society · 1994
Digital filtering of audio signals in professional mixing consoles requires low roundoff noise digital filter structures which are suitable for realizing very low pole frequencies. Without appropriate choice of the digital filter structure the effects of limited word length lead to high necessary internal word length of the signal processor. On the basis of a roundoff error analysis a new recursive digital filter structure is compared with already known filter structures, especially for very low cutoff frequencies