Measurement of Turbulent Air Noise Distortion in Loudspeaker Systems

Klippel W, Werner R. Measurement of Turbulent Air Noise Distortion in Loudspeaker Systems. J Audio Eng Soc. 2011;59(7/8):475-486. Available from: https://aes.org/publications/elibrary-page/?id=15973

@article{Klippel2011_15973,
  author = {Klippel, Wolfgang and Werner, Robert},
  title = {{Measurement of Turbulent Air Noise Distortion in Loudspeaker Systems}},
  journal = {Journal of the Audio Engineering Society},
  volume = {59},
  number = {7/8},
  pages = {475--486},
  year = {2011},
  month = jul,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15973}
}

TY  - JOUR
TI  - Measurement of Turbulent Air Noise Distortion in Loudspeaker Systems
AU  - Klippel, Wolfgang
AU  - Werner, Robert
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 59
IS  - 7/8
SP  - 475
EP  - 486
PY  - 2011
DA  - 2011/07/06
UR  - https://aes.org/publications/elibrary-page/?id=15973
PB  - Audio Engineering Society
LA  - en
AB  - In many loudspeaker systems high levels of air compression pressure result in turbulent noise if there are any air leaks. Traditional measurement techniques have difficulty identifying this particular defect because the resulting noise is wideband with low-power density, which is easily masked by environmental noise. A new technique designed to detect this kind of defect is based on asynchronous demodulation and envelope averaging. By accumulating the total energy of air leak noise, detection sensitivity increased by 20 dB for a 1-second measurement interval. This approach exploits the spectral information between the higher-order harmonics.
ER  -