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Rockbox mail archiveSubject: Re: Quick questionsRe: Quick questions
From: Chris Holt <amiga2k_at_cox.net>
Date: Mon, 20 Oct 2003 13:23:42 -0400 NO This is completely wrong. JS utilizes a MS Stereo uses one channel to encode information that is identical on the left and right channels and the other channel to encode the differences between the two channels., to reduce the quantity of information. There is no reason for a MS stereo encoding technique to sacrifice quality to reduce needed bandwidth because it can be done without sacrifice. What you give below is closer to a description of Intensity Stereo encoding which is only used for Layer2 encoding on low bitrate files where it only encodes bits that are perceived to be important to the stereophonic image. I'm no expert on the MAS chip, but I feel fairly confident that it shouldn't be doing IS encoding, at least on the higher quality settings. Surely someone here can expand on this. Chris On Mon, 20 Oct 2003 17:31:10 +0100, BlueChip wrote: > 1. ??? > 2. "Joint Stereo" divides the fequency spectrum in to two halves. Not > sure quite where the line is, but the theory is that the human ear > cannot detect direction for frequencies below a certain value. > SO... The recording is generally stereo, but frequencies below this > line (not more than 200Hz) will be recorded in mono. > ...it's fine until you listen carefully - if you can hear MP3 "hiss" > then you will likely be able to detect the mono reduction on "joint > stereo" > > At 11:35 20/10/03 -0400, you wrote: > > >> I have a couple of questions about record settings; >> >> >> 1. Quality 1-7 relates to what bitrates?? >> >> >> 2. Joint stereo vs stereo difference. >> >> >> Thanks ahead, >> >> >> Bubba Received on 2003-10-20 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |