Pls I need education/enlightenment from Nairalanders who are knowledgeable about Islamic call to praye/worship.
In my local community (one of the SW states) the CDA exco of which I am a member received strong complaints from members who feel highly disturbed by the persistent noise emanating from megaphones mounted atop the bungalow-building mosque in our neighbourhood.
Whereas, they claim to have come to terms with the amplified call to prayers five times a day, the big challenge for them is the megaphoned loud chatterings before and after the actual call to prayers.
Some of the chatterings goes like: 'alhaji Ganiyu, otun adini, e dide e wa kirun' iya sunnah an reti yin e se kanman'. And also some really slurry chanting of what I think are quranic verses by sleepy teenager-apprentice imam.
The matter is threatening to create serious friction in the otherwise calm neighbourhood.
My question is:
In line with sunnah or hadith (I understand these are the ways/lifestyles of Prophet Mohammed..peace be on to him...which His followers have universally accepted as standards), what is the requirement for call to prayers? Must it be preceeded and/or followed with chatterings and praise singing of prominent moslems in the neighbourhood? If so, must such be done via the megaphones?
I like to know so I can meaningfuly contribute to solution building at the exco or gen meeting of CDA.
As said earlier, I want Mullahs, Ustaz, Immams on this platform to share knowledge in that aspect of the Islam religion with me...or better still point me to authoritative literatures I can research for credible answers.

In a simple term, the chattering is not part of call to prayer and absolutely unnecessary.