Materials or assemblies with a high NRC generally have:
A. a high STC
B. a low STC
C. a high reverberation time
D. a low absorption coefficient
why is the answer B?
if the assembly can absorb a lot of noise, then there is little noise bouncing around, then does that not lead to a better sound insulation for the room next door which in turn mean a good (high) STC?
please enlighten~