As for pain to your granny during daytime then you can provide her earplugs as someone suggested.
Well I pray to The Almighty that your mother or grandmother develop the same medical condition as my grandmother then we'll see how humerous the ear-plugs suggestion is. :)
[quote]
Even non-Muslims I know who visit Muslim countries say what a beautiful experience is it.
[/quote]
We had a Brit visiting us, may Allaah forgive me for repeating what he said, "it sounds like the howling of wolves", he wasn't being disrespectful because dogs are not considered a filthy thing in their culture but we felt offended even though it does actually set of my aunty's dog howling.
If it was only one Adhaan in every area from the loudspeaker then it'd be manageable, it would be nice and act as Da'wah if it was in a melodious voice but the voices of the Muezzins in my village are strained and balghum-filled.
Even our Mosque Imam agrees with me, and he's a Deobandi-Hanafi-Sunni-Muslim scholar.
I've also seen a net Fatwa website run by an Arab Salafi(Ahle Hadees in Pk)-Sunni scholar say that the use of loudspeakers is not neccesary.