On Thu, 15 Apr 2004, Dr. Nick wrote: > This is for "mid-side coding for each frame". What is > this? Specifically, is this like the mid-side recording technique?
Yes. The sum of the left and right channels is stored as the first channel, and the difference as the second channel. If there's not a lot of stereo information in the mix, this can result in a smaller, more easily compressable second channel. (In the case where there's no stereo information, the side channel will have nothing in it, which is obviously very easy to compress.) > If so, that means the audio file is being changed by flac, yes? Well, yes; flac has to change the data in order to compress it; unchanged data would not be compressed! Or do you mean the decoded output of such a file would be different from the original input? If so, no; the decoder will automatically convert mid-side back into stereo if that's necessary. cjs -- Curt Sampson <[EMAIL PROTECTED]> +81 90 7737 2974 http://www.NetBSD.org Don't you know, in this new Dark Age, we're all light. --XTC ------------------------------------------------------- This SF.Net email is sponsored by: IBM Linux Tutorials Free Linux tutorial presented by Daniel Robbins, President and CEO of GenToo technologies. Learn everything from fundamentals to system administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click _______________________________________________ Flac-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/flac-users
