reverberation time
3.The fixed quantity guideline of the timbre is given by testing the empty yard reverberation time and calculating the full yard reverberation time of the odeum in the Xiaogan college.
4.It reveals the contradiction and unity of reverberation time in speech and music, argues the feasibility and necessity of a broken-lined reverberation decay manner (e.g. faster at speed in early reverberation decay and slower in late reverberation decay) in church acoustic design.
5.Basing on the different using requirements, how to select an optimization reverberation time is one of the important contents in the timbre design.
6.The factor set includes the reverberation time RT, the mean forte sound pressure level LpF, the lateral efficiency LE, the frequency characteristic of early decay time | EDT(f)|, and Vmax(10 lg LE ), the maximum variation of 10 lg LE in a hall.
7.The deviated evaluation caused by either the low signal-to-noise ratio or the careless choice of the integration limit is avoided, and a precisive reverberation time evaluation is achieved.
8.It is revealed that acoustic quality is an important consideration in these buildings, and it may vary considerably with the same objective acoustic indices such as sound pressure level and reverberation time.
9.we also compare our results with those given by experiment and Sabine′s equation. The comparison shows that the new method is more effective and accurate than Sabine′s equation in calculating reverberation time of small enclosures.
10.Through a great deal of research on the history and reality of churches home and abroad, the acoustical behavior and psychology of worshipers, the author considers that a modern church still needs a long reverberation time which characterize the church acoustic environment.
