The effect of sound with different frequencies on men and women noise annoyance

Sound is an effective exogenous factors which affecting human brain processing mechanisms. This research was quasi experimental study that was carried out among 70 students to evaluate the effect of sound frequency on human noise annoyance. Noise annoyance degree was measured during exposure to sound at various frequencies of 500, 1000, 2000, 4000 and 8000 Hz. Sound.exe software was used to determine the sound with different frequencies and noise annoyance was determined based on the acoustic questionnaire “Acoustics Assessment of noise annoyance by means of social and socio-acoustic surveys”. According to the results of this study, in female participants, the maximum degree of noise annoyance is at 4000 Hz and in male subjects, the highest degree of noise annoyance is at 8000 Hz and from 500 to 8000 Hz, the frequency of noise annoyance increases, respectively. There was significant relationship between noise annoyances with different frequencies. The highest level of noise annoyance was at 8000 Hz and the lowest level was at 500. There was significant difference between male and female dissonance. In this study, the gender variable as one of the factors affecting anxiety was studied. The results of this study showed that the frequency with maximum noise annoyance is different in men and women and the maximum degree of noise annoyance is at 4000 and 8000 Hz.