Digital Low-Pass Filter Design with Analog-Matched Magnitude Response

Massberg M. Digital Low-Pass Filter Design with Analog-Matched Magnitude Response. In: AES Convention 131. Audio Engineering Society; 2011. Paper 8551. Available from: https://aes.org/publications/elibrary-page/?id=16077

@inproceedings{Massberg2011_16077,
  author = {Massberg, Michael},
  title = {{Digital Low-Pass Filter Design with Analog-Matched Magnitude Response}},
  booktitle = {AES Convention 131},
  note = {Paper 8551},
  year = {2011},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=16077}
}

TY  - CPAPER
TI  - Digital Low-Pass Filter Design with Analog-Matched Magnitude Response
AU  - Massberg, Michael
T2  - AES Convention 131
M1  - Paper 8551
PY  - 2011
DA  - 2011/10/06
UR  - https://aes.org/publications/elibrary-page/?id=16077
PB  - Audio Engineering Society
LA  - en
AB  - Using the bilinear transform to derive digital low-pass filters from their analog prototypes introduces severe warping of the response once the cutoff frequency approaches the Nyquist limit. We show how to design pre- warped first and second order low-pass prototypes that, after application of the bilinear transform, provide a better match with the magnitude response of the analog original than applying the bilinear transform directly. Result plots are given and compared for different cutoff frequencies and Q factors.
ER  -