ASA 129th Meeting - Washington, DC - 1995 May 30 .. Jun 06

3aAA3. A room acoustics measurement system round robin.

J. S. Bradley

IRC, Natl. Res. Council, Montreal Rd., Ottawa, ON K1A 0R6, Canada

This paper reports preliminary results of a room acoustics measurement system round robin. The round robin uses a commercial digital reverberator to represent three standard rooms that can be sent from one measurement group to another. Thus the tests compare basic calculation procedures and do not include the effects of variations due to types and placement of transducers. Each participant measures octave band values of monaural measures such as decay times, early/late ratios, and RASTI values on three different reverberator settings. Where possible, participants can also measure interaural cross correlations. Initial comparisons include both commercially available measurement systems and the measurement systems of individual research groups. The initial results will compare measurements from groups in North America, Japan, and Europe. Subsequent work will seek to explain the cause of the observed differences.