Realizing an Acoustic Vector Network Analyzer

MacDonell M, Scott J. Realizing an Acoustic Vector Network Analyzer. In: AES Convention 147. Audio Engineering Society; 2019. Paper 10220. Available from: https://aes.org/publications/elibrary-page/?id=20593

@inproceedings{MacDonell2019_20593,
  author = {MacDonell, Marcus and Scott, Jonathan},
  title = {{Realizing an Acoustic Vector Network Analyzer}},
  booktitle = {AES Convention 147},
  note = {Paper 10220},
  year = {2019},
  month = oct,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=20593}
}

TY  - CPAPER
TI  - Realizing an Acoustic Vector Network Analyzer
AU  - MacDonell, Marcus
AU  - Scott, Jonathan
T2  - AES Convention 147
M1  - Paper 10220
PY  - 2019
DA  - 2019/10/06
UR  - https://aes.org/publications/elibrary-page/?id=20593
PB  - Audio Engineering Society
LA  - en
AB  - Acoustic absorption, reflection, and transmission is typically measured using an impedance tube. We present the design and initial measurements of a radically different measurement system. The instrument builds on the rich history and deep mathematics developed in pursuit of electromagnetic Vector-corrected Network Analyzers (VNAs). Using acoustic directional couplers and a traditional VNA mainframe we assembled an “Acoustic Vector Network Analyzer” (AVNA). The instrument measures acoustic scattering parameters, the complex reflection and transmission coefficients, of materials, transmission lines, ported structures, ducts, etc. After the fashion of electromagnetic VNAs we have constructed millimeter-wave measurement heads that span the 800 Hz–2200 Hz (420–150 mm) and 10 kHz–22 kHz (35–15 mm) bands, demonstrating scalability. We present initial measurement results.
ER  -