在丹麦广播公司新的语言播音室内已使用了各种各样的声学处理。本文论证了利用一种新颖的逆时分析技术,以三分之一倍频程带宽滤波器从80Hz到8kHz测量到的混响时间大约为0.1～0.2s,并证明了如果采用传统的顺时分析法,则在低频段,滤波器的振铃效应会引起测量上的误差。 A variety of acoustic treatments have been used in the Danish Broadcasting Corporation’s new language studio. This paper demonstrates the use of a novel inverse time-of-day analysis technique with a one-third octave bandwidth filter measuring reverberation time from 80 Hz to 8 kHz approximately 0.1 to 0.2 s and proves that if a traditional clockwise Analytical method, then in the low frequency band, the ringing effect of the filter can cause the measurement error.