IIR Biquad Controllers for Low Frequency Acoustic Resonance

Avis MR. IIR Biquad Controllers for Low Frequency Acoustic Resonance. In: AES Convention 111. Audio Engineering Society; 2001. Paper 5474. Available from: https://aes.org/publications/elibrary-page/?id=9865

@inproceedings{Avis2001_9865,
  author = {Avis, Mark R.},
  title = {{IIR Biquad Controllers for Low Frequency Acoustic Resonance}},
  booktitle = {AES Convention 111},
  note = {Paper 5474},
  year = {2001},
  month = nov,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=9865}
}

TY  - CPAPER
TI  - IIR Biquad Controllers for Low Frequency Acoustic Resonance
AU  - Avis, Mark R.
T2  - AES Convention 111
M1  - Paper 5474
PY  - 2001
DA  - 2001/11/06
UR  - https://aes.org/publications/elibrary-page/?id=9865
PB  - Audio Engineering Society
LA  - en
AB  - Low frequency normal modes of an enclosed soundfield introduce unwanted frequency, spatial and temporal artefacts to reproduced electroacoustic signals. A novel control approach is presented based on an analytical modal decomposition, which incorporates a low-frequency soundfield model formed from the sum of a number of second-order IIR filter sections. It is shown that within constraints determined by the model accuracy, IIR controllers may be constructed and may be applied to control tasks such as point pressure cancellation and the reduction of modal quality factor.
ER  -