Certain problems of noise annoyance*

Of many objective and subjective problems connected with noise annoyance the present paper presents the results of investigations concerning the following issues:
1. Dependence of the effectiveness of an acoustic baffle on the kind of closed space in which it has been placed.
2. Economic effects of measures taken to diminish noise inside a closed space.
3. Correlation between certain annoyance indices TNI and LNP and and the presentation of results of statistical traffic noise measurements.