Application of Matrix Analysis for Derivation of Acoustical Impedance of Horns

Voishvillo A, Kákonyi B, McLaughlin B. Application of Matrix Analysis for Derivation of Acoustical Impedance of Horns. In: AES Convention 147. Audio Engineering Society; 2019. Paper 551. Available from: https://aes.org/publications/elibrary-page/?id=20574

@inproceedings{Voishvillo2019_20574,
  author = {Voishvillo, Alexander and Kákonyi, Balázs and McLaughlin, Brian},
  title = {{Application of Matrix Analysis for Derivation of Acoustical Impedance of Horns}},
  booktitle = {AES Convention 147},
  note = {Paper 551},
  year = {2019},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20574}
}

TY  - CPAPER
TI  - Application of Matrix Analysis for Derivation of Acoustical Impedance of Horns
AU  - Voishvillo, Alexander
AU  - Kákonyi, Balázs
AU  - McLaughlin, Brian
T2  - AES Convention 147
M1  - Paper 551
PY  - 2019
DA  - 2019/10/06
UR  - https://aes.org/publications/elibrary-page/?id=20574
PB  - Audio Engineering Society
LA  - en
AB  - The direct measurement of a horn’s acoustical impedance requires knowledge of both the sound pressure and volume velocity at the throat of the horn. While measuring sound pressure is trivial, the measurement of volume velocity requires special equipment. This work proposes a new derivation method for the acoustical impedance of a horn. The method is based on matrix analysis and consists of two stages: derivation of the compression driver’s square transfer matrix of A-parameters, and measurement of electrical impedance and sound pressure at the throat of the horn. These functions yield two matrix equations that relate measured sound pressure and electrical impedance, which allows for an acoustical impedance derivation of the horn. A comparison with COMSOL simulation is provided.
ER  -