ABSTRACT

Trees and different kinds of vegetation belts (forest floor, grass, lawn, etc.) are of interest to acousticians because of the general belief in the ability of forests or of plantations to attenuate environmental noise and to create an inexpensive and pleasant microclimate. Measurements were reported from field and reverberant rooms with a view to establishing the influence of vegetation on the attenuation of noise (Eyring, 1946; Embleton, 1963; Beranek, 1971; Burns, 1979; Leschnik, 1980; Price et al., 1988; Attenborough, 1982, 1988; Rogers and Lee, 1989; Rogers et al., 1990). This section examines first the field results related to the attenuation of sound by forests, plantations, and shelter vegetation belts, and second, the results of measurements in reverberant rooms.