What exactly are these files?
What kind of information does the itunes take when it imports a cd? Does it take it as and incompressed track or does it compress it?
Itunes loseless
Itunes loseless
Can one send others to war if hes not willing to go himself?
The audio data remains uncompressed, but the data in the file itself is compressed.
Think of it like a zip file. If you use data compression on something, but the ZIP compression was lossy... you would encode a text file, but when unzipped it would be all garbled and messed up. Obviously ZIP encoding is totally lossless as well... it only serves to reduce the filesize. Compression is a very simple concept... all it does is replace similar sections with a simple expression.
Let's take the string "ham ham ham babies ham " and compress it... you would have a table "ham "= 1 and "babies "= 2, so it would simply replace each occurrence, so that your string is now "11121". Obviously there are less characters here, so the file is much smaller. But when you decode it, you still have the exact same information as when you began.
Lossy encoding like MP3 or JPG is actually a much more complicated algorithm where it will try to find a "near match" instead of keeping all of the data intact. This means there will be more matches, so you will have even smaller files... however this comes at the cost of accuracy for very fine details.
So the information is streamed from a CD into a file, and that file is compressed so that it can still be streamed back with absolutely no loss of the original data.
Think of it like a zip file. If you use data compression on something, but the ZIP compression was lossy... you would encode a text file, but when unzipped it would be all garbled and messed up. Obviously ZIP encoding is totally lossless as well... it only serves to reduce the filesize. Compression is a very simple concept... all it does is replace similar sections with a simple expression.
Let's take the string "ham ham ham babies ham " and compress it... you would have a table "ham "= 1 and "babies "= 2, so it would simply replace each occurrence, so that your string is now "11121". Obviously there are less characters here, so the file is much smaller. But when you decode it, you still have the exact same information as when you began.
Lossy encoding like MP3 or JPG is actually a much more complicated algorithm where it will try to find a "near match" instead of keeping all of the data intact. This means there will be more matches, so you will have even smaller files... however this comes at the cost of accuracy for very fine details.
So the information is streamed from a CD into a file, and that file is compressed so that it can still be streamed back with absolutely no loss of the original data.
- dedlyjedly
- Silent but Dedly
- Posts: 1212
- Joined: Thu Dec 07, 2006 7:03 pm
- Location: Las Vegas
-
- Half Baked
- Posts: 3533
- Joined: Wed Dec 06, 2006 2:58 pm
- Location: TN, YEEEEEEEEEEEEEEEEEEHAW!!!!
- Contact:
AFAIK the default is 128kbps mp3. I have mine set to 192kbps (minimum) VBR AAC and I can barely tell the difference on only certain albums. Not enough to care, considering how much more music I can fit.Francious70 wrote:If I'm not mistaken, Apple Losless is the default, in which case, there are no settings to edit.
- dedlyjedly
- Silent but Dedly
- Posts: 1212
- Joined: Thu Dec 07, 2006 7:03 pm
- Location: Las Vegas