Hello, the horn of my 05' Accord just recently started sounding different. It now has a higher sounding horn as opposed to the big deep sound it used to have before. I hate the way it sounds now because it just sounds like a cheap horn now. I dont what could have caused this because i dont have any battery power sapping mods or any mods to my car for that matter other that mud guards and leather seats. It almost sounds as if one horn is working ( the high pitched one) while the other is not (i've always heard that pitch but there was always another lower pitch in unison with that one).

p.s. i'm sorry if this question has been posted before

p.p.s. i checked the horns and nothing is obstructing the holes