my sis let me hear a ringtone, nivknamed 'mosquito'. she put the phone close to my ear, and all i heard was a loud, piercing kinda screeching sound. it was supposedly a kind of ringtone that adults couldnt hear. why?

then it dawned on me. i learned bout it in the music module. as people age, the audile range of frequencies one can hear decreases. hence this unpleasant, high frequency sound can only be heard by young people.

and its the 1st time i've applied anything i've learned this sem.

me at 11:38 PM