According to Wikipedia, Vietnam has got the following dialects:
Northern Vietnamese: Hanoi, Haiphong, Red River Delta
North-central Vietnamese: Thanh Hoá, Nghệ An, Hà Tĩnh
Mid-Central Vietnamese : Quảng Bình, Quảng Trị, Huế, Thừa Thiên
South-Central Vietnamese : Đà Nẵng, Quảng Nam, Quảng Ngãi, Phú Yên
Southern Vietnamese: Nha Trang, Bà Rịa–Vũng Tàu, Saigon, Mekong Delta (Miền Tây)
I'd like to hear sound samples of these dialects. Preferably sound samples that speaks the same text by vietnamese people from all walks of life (old, young, man, woman, children).