Measurement of the Sound Absorption Coefficient of Materials with a New Sound Intensity Technique

Farina A, Torelli A. Measurement of the Sound Absorption Coefficient of Materials with a New Sound Intensity Technique. In: AES Convention 102. Audio Engineering Society; 1997. Paper 4409. Available from: https://aes.org/publications/elibrary-page/?id=7370

@inproceedings{Farina1997_7370,
  author = {Farina, Angelo and Torelli, A.},
  title = {{Measurement of the Sound Absorption Coefficient of Materials with a New Sound Intensity Technique}},
  booktitle = {AES Convention 102},
  note = {Paper 4409},
  year = {1997},
  month = mar,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=7370}
}

TY  - CPAPER
TI  - Measurement of the Sound Absorption Coefficient of Materials with a New Sound Intensity Technique
AU  - Farina, Angelo
AU  - Torelli, A.
T2  - AES Convention 102
M1  - Paper 4409
PY  - 1997
DA  - 1997/03/06
UR  - https://aes.org/publications/elibrary-page/?id=7370
PB  - Audio Engineering Society
LA  - en
AB  - The paper presents a completely new measurement technique for the sound absorption properties of materials, based on the measurements of active intensity and sound energy density. The technique allows one to measure the absorption coefficient with a wide-band excitation, to use frequency bands of any width, and to make measurements both inside a tube or in situ. The intensity technique is compared to the transfer function method (as defined in the ASTM E-1050 Standard) by means of a complete theoretical study and large experimental validation. The results suggest that the new method is at least as accurate and reliable as the ASTM E-1050 Standard. The method also has many advantages: it is faster and easier, it directly produces results in one-third or 1-octave bands, and it can be implemented with portable, low-cost instrumentation.
ER  -