Welcome Guest ( Log In | Register )

What does FLAC actually store?, How does the compression work?
post Feb 15 2006, 18:00
Post #1

Group: Members
Posts: 2
Joined: 15-February 06
Member No.: 27779

I've just recently gotten into all these different kinds of lossless codecs and I'm fascinated by how they work.

I understand that codecs like FLAC and TTA make a prediction for the next sample and then simply store the difference between the prediction and the actual value - which is most of the time significantly smaller than storing the full amplitude.

My question is.. does it only store that difference value? Or is it having to store the prediction model/function/curve or whatever was used for that particular chunk of data. If it's only storing the difference, and that difference is usually a very small number, then shouldnt compression ratios be much better than 2:1 or 3:1?

Maybe I havent fully understood how this stuff works, anyone able to shed a bit of light on it for me? Thanks.
Go to the top of the page
+Quote Post

Posts in this topic

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:


RSS Lo-Fi Version Time is now: 1st December 2015 - 11:55