Is it called 'tone'?

[Valero]

I'm in my 4th month of self learning the flute. I did a search on this board for my question but could find not answer. I have started playing the flute using numerous books and CDs in the market and I think all of them are wonderful. The problem I have is that recently I started recording my flute playing and I've found that the pieces that I played with the CDs that come with the books do not sound similar to the CDs. I don't know if is called tone but it sounds flat compare to the CDs.
My questions is:
What is this called?
and what can I do to practice getting out of those flat sounding notes?
Most of them seem to be on the high end.
Thank you very much for any help.

[etgohomeok]

I suppose you could call it tone.

High notes tend to go flat. You'll have to roll the flute out from you a little when you get to those notes.

[fii]

in my opinion, you could call it a tone. my intonation (pitch) is also not really good especially in the third register. when i asked some musician how to fix it, they always say you must do the longnote using tuner. experimenting with rolling the flute, embouchure, etc. maybe this may works.

High notes tend to go flat. You'll have to roll the flute out from you a little when you get to those notes.

in my case, it's different. my high notes tend to go sharp. so i have to roll in the flute or use alternate fingering to flatten it. especially the F# and G# (my highest note is Bb).

[fluteguy18]

You shouldn't be rolling in or out at all. It hurts your intonation. You should be making pitch adjustments with your embouchure.

[fii]

You shouldn't be rolling in or out at all. It hurts your intonation. You should be making pitch adjustments with your embouchure.

thanks for the info. i'll try it