Fig. 2.

Survey of natural reverberation. (A) Maps showing the location of the 271 measured survey sites. (Top) Massachusetts and New Hampshire; (Middle) Greater Boston area with most survey sites in Boston, Cambridge, and Somerville; (Bottom) Cambridge, the location of most survey sites. Red boxes indicate the region shown in higher detail below. (B) Photographs of 14 example locations from the survey (from Top Left: suburban street corner, hallway, restaurant, Boston street, restaurant booth, forest, conference room, bathroom, open-plan office, MIT building 46, car, department store, bathroom, subway station, bar, office, aerobics gym).