Compressed vs. "Remastered" CDs


Hello all. I am a music lover but not an engineer by any means. Can someone explain what a "remastered" CD is, and if that term necessarily or usually means the analog signal has been compressed or rounded-off, over-digitized, etc. There are many remastered CDs that I think sound better than the early 80's releases, but I have read some negative articles about the remastering process. By the by, why do certain CDs, such as Beck "Sea Change", for example, sound cleaner and sharper than others? Can anyone enlighten me?? Thanks.
klipschking
Gtfour45,

Funny you mention Deep Purple specifically. I had all the Deep Purple cuts on my server cued up the other day, which included original Machine Head CD master and recent remasterings of certain songs and took note of what you are talking about in essence. The newer remasters were superior in every way. They were also considerably louder on average.

KlipschKing, yeah, the difference in volume control levels can be considerable from many older CDs to most newer CDs.

On thing I have experimented with is a setting in Windows Media Player Library setup that would seem to indicate some type of volume leveling is applied to cuts as they are played, which also has some server performance overhead that goes along with it. I have tried this but not done a careful a/b listening test to determine its effects.

Anybody know more about this feature on Windows Media Player? It sounds useful perhaps if it works though the result might be something somewhat different than what the producer intended?
Gtfour45,

Funny you mention Deep Purple specifically. I had all the Deep Purple cuts on my server cued up the other day, which included original Machine Head CD master and recent remasterings of certain songs and took note of what you are talking about in essence. The newer remasters were superior in every way. They were also considerably louder on average.

KlipschKing, yeah, the difference in volume control levels can be considerable from many older CDs to most newer CDs.

On thing I have experimented with is a setting in Windows Media Player Library setup that would seem to indicate some type of volume leveling is applied to cuts as they are played, which also has some server performance overhead that goes along with it. I have tried this but not done a careful a/b listening test to determine its effects.

Anybody know more about this feature on Windows Media Player? It sounds useful perhaps if it works though the result might be something somewhat different than what the producer intended? I'm guessing it just applies a fixed level boost to everything before it gets served up to make lower volume CDs match better to higher volume ones, but the devil would be in the details.
I have a vague recollection of their being a web site that listed CDs that people thought were overly compressed. I tried a quick Google search but I'm at work and many of the sites are blocked.
Remixing is different than remastering. Very few releases that are remastered have been remixed. The original 2 channel masters may or may not still be available and the engineers are frequently forced to use 2nd or 3rd generation tapes. In some rare case engineers have turned to digitizing vinyl copies of releases when no tapes are available. Better quality remasters don't try to modernize the sound of the recording. If the recording is from the 60/70s it shouldn't be made overly loud or too compressed, since this would be historically inaccurate. As mentioned above, the recordings may be EQ'ed slightly differently to take into account the differences between vinyl and CD playback. Additionally once digitized it's possible to remove excessive tape hiss and deal with other noise reduction issues. Some people like hearing the sounds of music stands being knocked over, doors being slammed and tape bleed through. Other people think these items should be corrected.
the original recording...the materials(masters)..the remastering process...infinite variables in mastering and remastering insure that consistancy will be different. manufacturing materials as well. this is true for all media.....lots of money and time is no guarantee of great results, and even when there are great results, the complaints don't stop anyway.