"Haary" <email@example.com> wrote in message
> I should be able to record minimum of 15 hours of audio and
> I should be able to store a minimum of 512 MB data
> It is highly important for me that the voice recording function should
> have extraordinary quality.
Just how much "extraordinary quality" do you expect at < 80 kbs?
(If it records from a built in microphone, that will be *more* than adequate
though, and "extraordinary quality" is very unlikely!)