Xiaomi India — Redmi 3S prime / voice recorder issue

Address:

Ujjain, Madhya Pradesh

This cell was good .. but the voice recorder of my redmi 3s prime is just a [censored].. because the recorded voice is so rough n poor in quality it got lots of fluctuations n noises .. Its results are worst as the final recorded audio. The audio recording quality of a 700rs bar phone was more better then this . .
Basically Im a musician . And voice recorder app is very usefull application for me. Coz i had to record many of ideas in my cell.
When i get this product i was satisfied. But first id use its voice recorder and heard the result . For a while get really upset coz i had high expectations.. which this cell cant fulfill...
Plzzz help me n tell me is it hardware problem of the mic or software problem ????

Plzzz help me .. in solving out this problem ...