S
skinnyfat
Guest
Yesterday afternoon I was a little bored so I decided to a little experiment. Compare MP3 to CD Audio.
I decided on Katie Melua's Thank you stars which is a nice mix of vocal, bass and clear airy treble ;D
I have the original CD and ripped the track to 192 kpbs MP3 using windows media player 10. I put both tracks through a spectrum analyser and these are my very basic results
This is the CD spectrum and thus will be the reference as it is the closest thing to the master we can get.
This one is the MP3 ripped at 192 kps.
The most notable point here is the sharp roll-off in the HF obviously due to the nature of compression removing inaudible info.
For ease of comparison I've superimposed the two here
As you can see i've made a few crude markers to indicate the main deviances visible. Apart from the obvious HF roll off, there isn't much of a difference
Now this one is of the same track but ripped at 64kps
As you can see this a completely different story with hge amounts of compression (range compression) and a darn right awful noise ;D
Right and thats as far as I'm going for now
Greg
I decided on Katie Melua's Thank you stars which is a nice mix of vocal, bass and clear airy treble ;D
I have the original CD and ripped the track to 192 kpbs MP3 using windows media player 10. I put both tracks through a spectrum analyser and these are my very basic results
This is the CD spectrum and thus will be the reference as it is the closest thing to the master we can get.
This one is the MP3 ripped at 192 kps.
The most notable point here is the sharp roll-off in the HF obviously due to the nature of compression removing inaudible info.
For ease of comparison I've superimposed the two here
As you can see i've made a few crude markers to indicate the main deviances visible. Apart from the obvious HF roll off, there isn't much of a difference
Now this one is of the same track but ripped at 64kps
As you can see this a completely different story with hge amounts of compression (range compression) and a darn right awful noise ;D
Right and thats as far as I'm going for now
Greg
