ASA 124th Meeting New Orleans 1992 October

5pAA4. More experimental data collected by comparison between the Schroeder's back integration method and a new method based on sound intensity for measuring reverberation time.

Domenico Stanzial

Cemoter, Natl. Res. Council of Italy, Via Canal Bianco 28, I-44044 Cassana, Ferrara, Italy

E. Carletti


P. Fausti

F. Pedrielli

F. Pedrielli, Jr.

R. Pompoli

Ferrara University

The experimental comparison between the Schroeder's and the intensity-based method for measuring reverberation time [D. Stanzial et al., J. Acoust. Soc. Am. 91, 2368(A) (1992)] has been improved both in the enumeration of cases and in its methodology. The sound field was generated inside various test rooms of different volume by means of a reference isotropic source driven by a maximum length sequence signal. The measured (pressure) impulse responses of the rooms as well as the active and reactive sound intensity for the same input--output configuration of the acoustic system was then used for the reverberation time evaluation. The collected data by comparison between the two methods are reported here.