| Chronology | Current Month | Current Thread | Current Date |
| [Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
All of this is true, however, I can tell you from a LOT of experience that unless have some seriously golden ears, there will be no audible artifacts. As far as how to do it, any audio editing program can handle this simple task. I use Amadeus Pro (for the Mac, written by Martin Hairer, a mathematician at the University of Warwick) and heartily recommend it although there are many other alternatives for Mac and other platforms.
Ludwik, If you don't have the capability and don't care to get into it, I'd be happy to do the concatenation for you.
John Mallinckrodt
Cal Poly Pomona
On May 5, 2011, at 1:38 AM, John Denker wrote:
On 05/04/2011 06:15 PM, ludwik kowalski wrote:
I want to concatenate several short mp3 files (turn them into oneDon't do it.
long mp3 file). How can this be done?
1) mp3 uses a lot of context, which means that any concatenation
involves decoding mp3 into raw audio, concatenating, and then
re-encoding.
Some programs may do this behind your back so you don't notice,
but it is nevertheless being done.
2) mp3 encoding is lossy.
3) Since you have the original raw audio lying around, you are
better off concatenating that, and then encoding.
Since audio files are so small compared to the capabilities of
modern computers, there's no reason to edit anything other than
the original raw audio, upstream of any lossy encoding.
Compression makes sense as the last step before mass distribution.
It does not make sense at any earlier step.
For video the strategy is trickier, but for audio it is a
no-brainer.
_______________________________________________