The effect of porous materials on the acoustic response of DML panels

Horoshenkov K, Harris N, Prokofieva E. The effect of porous materials on the acoustic response of DML panels. In: AES Convention 110. Audio Engineering Society; 2001. Paper 5324. Available from: https://aes.org/publications/elibrary-page/?id=9996

@inproceedings{Horoshenkov2001_9996,
  author = {Horoshenkov, Kirill and Harris, Neil and Prokofieva, Elena},
  title = {{The effect of porous materials on the acoustic response of DML panels}},
  booktitle = {AES Convention 110},
  note = {Paper 5324},
  year = {2001},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=9996}
}

TY  - CPAPER
TI  - The effect of porous materials on the acoustic response of DML panels
AU  - Horoshenkov, Kirill
AU  - Harris, Neil
AU  - Prokofieva, Elena
T2  - AES Convention 110
M1  - Paper 5324
PY  - 2001
DA  - 2001/05/06
UR  - https://aes.org/publications/elibrary-page/?id=9996
PB  - Audio Engineering Society
LA  - en
AB  - This work investigates experimentally the effect a porous layer on the acoustic response of distributed mode loudspeakers (DMLs), which are manufactured under licence from NXT plc. The experiments were carried out in an anechoic chamber. The results suggest that a porous layer between a rigid base and a DML panel can considerably alter the acoustic emission in the near-field and in the far-field. This is typically illustrated by a reduction in the level of fluctuations in the emitted acoustic pressure spectra. These fluctuations are normally associated with interference between the sound emitted by the front surface of the speaker and by that emitted from the back. The results also suggest that the interference pattern in the air gap is altered by the porous layer, so that some individual resonances in the acoustic pressure spectra which inevitably occur between the rigid base and the vibrating plate can appear suppressed. A numerical simulation was carried out to model this effect.
ER  -