It sounds like a cacophony, but after several weeks, blind people start getting pretty good at understanding what's in front of them just based on what they're hearing.
أشبه بنغمات متنافرة، لكن بعد عدة أسابيع يبلي الكفيف حسناً بإدراك ما هو أمامه بناء على ما يسمعه.