Stage parameter

Support is defined in [A. C. Gade, "Investigations on musicians room acoustic conditions in concert halls, II: Field experiments and synthesis of results," Acustica, vol. 69, pp. 249-62 (1989)] as:

(14)

where it is assumed that the response is measured with an omni-directional microphone at a distance of 1m from the source. The time limits are t_d, the direct time, t_e, the early time, and t_l, the late time. ST1 is defined with direct time 10ms, early time 20ms and late time 100ms. The time limits can be changed in the boxes to provide other versions of the parameter.