Improving the Frequency Response Magnitude and Phase of Analogue-Matched Digital Filters

Flynn J, Reiss JD. Improving the Frequency Response Magnitude and Phase of Analogue-Matched Digital Filters. In: AES Convention 144. Audio Engineering Society; 2018. Paper 10016. Available from: https://aes.org/publications/elibrary-page/?id=19412

@inproceedings{Flynn2018_19412,
  author = {Flynn, John and Reiss, Joshua D.},
  title = {{Improving the Frequency Response Magnitude and Phase of Analogue-Matched Digital Filters}},
  booktitle = {AES Convention 144},
  note = {Paper 10016},
  year = {2018},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=19412}
}

TY  - CPAPER
TI  - Improving the Frequency Response Magnitude and Phase of Analogue-Matched Digital Filters
AU  - Flynn, John
AU  - Reiss, Joshua D.
T2  - AES Convention 144
M1  - Paper 10016
PY  - 2018
DA  - 2018/05/06
UR  - https://aes.org/publications/elibrary-page/?id=19412
PB  - Audio Engineering Society
LA  - en
AB  - Current closed-form IIR methods for approximating an analogue prototype filter in the discrete-domain do not match frequency response phase. The frequency sampling method can match phase, but requires extremely long filter lengths (and corresponding latency) to perform well at low frequencies. We propose a method for discretizing an analogue prototype that does not succumb to these issues. Contrary to the IIR methods, it accurately approximates the phase, as well as the magnitude response. The proposed method exhibits good low frequency resolution using much smaller filter lengths than design by frequency sampling.
ER  -