PS: on stock rom I had the same problem.
Hi guys. I have a Samsung Galaxy Ace S5830C and everytime I try to record a voice message on whatsapp (that one holding microphone button) my voice goes out to loud and distorced, near or far away from the phone. When I try to record a audio from the cellphone recorder, it goes normal. But I don't want to have to switch apps everytime for record a 2 seconds voice message. Is there any tweak or anything like that so can I switch the sensibility of the microphone level? My cellphone is rooted and I use the "4.2.2" rom (based on the 2.3.6).