[Matt714]

Hi,
 
So basically I've been using Spectro (spectrogram program) on my music collection, and I've stumbled on a few oddities. A few of my Iron Maiden albums (all in .mp3 format) have some cutoffs like 16Hz or 18Hz despite being ripped directly from the retail-bought legit CDs at 320kbps CBR (in Windows Media Player). I tried re-ripping a few tracks to compare and they have the same frequency than my old archived ones. Is the record label master at fault?

 

[Roseval]

Rip to lossless ,use Spectro and you know for sure if this is in the original file as well or not.

 

[Matt714]

Doesn't seem to be the original files.
 
Took a few screenshots.
 
iTunes 320kbps CBR mp3 (http://i.imgur.com/Uu0nGaW.jpg)
Windows Media Player 320kbps CBR mp3 (http://i.imgur.com/FVg8gIe.jpg)
Windows Media Player WAV Lossless (http://i.imgur.com/uQ26HLx.jpg)
 
 
Really weird that WMP is sometimes ripping to 128kbps-ish frequencies when 320kbps is clearly chosen. Generally all my other albums are 20.5Khz-ish.

 

[bgentry]

I would be curious how a more premium player would behave with the same files. Something like JRiver Media Center.

I have a good number of Iron Maiden's albums, but I'm not a super fan. What song is that you were analyzing?

Brian.