1. ASTC provides a better basis for comparison to STC, but why might NIC be more useful in real buildings than ASTC? Which one would better assess the impact of intruding sound on the occupants of the

1. ASTC provides a better basis for comparison to STC, but why might NIC be more useful in real buildings than ASTC? Which one would better assess the impact of intruding sound on the occupants of the receiving room? Would there be value in comparing NIC to ASTC?

2. Discuss your experience of poor isolation between spaces—perhaps in an office or apartment that you've occupied. What do you think might have been done to improve the isolation?