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Trance Forum » » Forum  Production & Music Making - Sound quality when reencoding mp3
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Sound quality when reencoding mp3

full_on
IsraTrance Team

Started Topics :  279
Posts :  5475
Posted : Apr 20, 2005 03:57
I don't know if it's already asked, but I used the search and found nothing.

Let's suppose I have burnt an audio CD with a 192kbps mp3 I encoded right from an original to listen on a car.

What happens with the sound quality if I rip this copy in 192kbps using the same encoder? The quality will drop even when I use the same codec (that has the same psychoacoustic model)?

Anyone can shed some light on this?
Thank you.
Respect!
          .
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...Dance like nobody's watching...
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fregle
IsraTrance Junior Member

Started Topics :  11
Posts :  982
Posted : Apr 21, 2005 14:09
i think it will... But i'm not entirely sure because i don't know exactly how mp3-encodiing works, it might be that u get the same mp3 afterwards... But i'm 90% sure that there will be more destruction.
CLAW
CLAW

Started Topics :  117
Posts :  2738
Posted : Apr 21, 2005 14:17
If i understood well, u made a copy out of an original cd...
The copy u made is in 192 mp3 format for your car... (I dont get it y u did that but anyways)

What u r asking is, if u make another copy from the copy cd, with the same format 192, if the quality will change??

If that was your question well, no. The quality would not change, cause u r doing digits copy, that is y we call it digital... U are copying digits which means that is not the same like u make a copy from a tape and then again on another tape and it looses quality...

When u make a copy if u do not touch the format the quality remains the same...

I hope i helped...

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Colin OOOD
Moderator

Started Topics :  95
Posts :  5380
Posted : Apr 21, 2005 18:33
You question is ambiguous. Is the CD you have in the car:
1) a regular audio CD, that I can play in my shitty stereo at home, or is it
2) an MP3 CD that my computer can read?

If it's 1) then throw it away and do a straight CD quality copy for the car - you gain absolutely nothing by ripping an original CD to MP3 and burning an audio CD of the MP3. This is like asking the question "My face hurts when I punch myself. What can I do about it?".

If it's 2) then just copying the MP3 files from this CD to another CD will not lose quality.
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tryptic


Started Topics :  3
Posts :  29
Posted : Apr 21, 2005 19:03
If you mean you have copied an MP3 to a regular uncompressed audio CD (converting to PCM) then the effects of re-compressing this to MP3 will be to massively reduce the quality. Don't do it! Can't be bothered to go into a long explaination - you can probably find it on google...
full_on
IsraTrance Team

Started Topics :  279
Posts :  5475
Posted : Apr 25, 2005 00:33
Thank you all for trying to help.
Ok, let me make things clear with another example.

Let's supose I had some mp3 192 kbps on my computer and I burnt a CD with them (in audio format). So I got a music CD.

Let's suppose I use MusicMatch junkbox or any other program to rip this CD to mp3 192 kbps format.

What will happen to the quality?

I know I would never do that, I would just make another 100% total quality WAV CD, but I wanna know the answer.

Thank you!
Respect!
          .
...Be gentle with the earth...
...Dance like nobody's watching...
.
...I don't mind not going to Heaven, as long as they've got Coffee in Hell...
Colin OOOD
Moderator

Started Topics :  95
Posts :  5380
Posted : Apr 25, 2005 02:24
The quality would go down.           Mastering - http://mastering.OOOD.net :: www.is.gd/mastering
OOOD 5th album 'You Think You Are' - www.is.gd/tobuyoood :: www.OOOD.net
www.facebook.com/OOOD.music :: www.soundcloud.com/oood
Contact for bookings/mastering - colin@oood.net
phobium
Phobium

Started Topics :  14
Posts :  718
Posted : Apr 25, 2005 03:37
reencode is bad, mmm'kay?           ________________________
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