1600000m^3闭合空间体育场的扩声设计(待续)——鄂尔多斯体育场STIPA设计探讨

Sound Reinforcement Design of 1 600 000 m3 Closure Space Stadium(Continued)——STIPA Design of Stadium in Ordos

针对顶棚闭合后形成1 600 000 m3特大空间的体育场扩声设计,要求在RT60较长的条件下,不仅使扩声设计指标达到JGJ/T 131—2000的体育馆一级指标,同时还要实现STIPA空场平均值>0.50(各测量点不低于0.45条件下,其平均值方可有效)的招标要求。这个具有挑战性的扩声工程,采用了电声建声互补的设计理念与步骤,最终实现了目标。

Aiming at the requirement of sound reinforcement design of 1.60 million m3 stadium which ceiling is close, it is required that sound reinforcement index reach JGJ/T 131 -2000 when RT6o is long, meanwhile open stoping average STIPA is more than 0.50 （when STIPA of each measurement point is greater than or equal 0.45, average is effective ）. The chal- lenging sound reinforcement project using design idea and steps of complementary electroacoustics and architectural acoustics realize the target.