[Top] [All Lists]

Re: MP3 vs CD

Subject: Re: MP3 vs CD
From: "Rob Danielson" danielson_rob
Date: Mon Dec 17, 2007 12:00 am ((PST))
At 12:27 PM -0800 12/15/07, Dan Dugan wrote:
>  >This is either a
>>technical question or a "golden ear" question and not meant to imply
>>anything bad about Bernie and his fabulous recordings... is 192kbps
>>as good a recording as a CD? This seems to have been a debate when
>>iTunes came out and I haven't really heard much except for speculative
>>comments. What does this group of true audiophiles think about this?
>>  Is this discrepancy in quality a myth or fact?
>I've done double-blind listening tests. 192K MP3, with a good encoder
>(there are some dogs out there), is -very difficult- to distinguish
>from CD. That qualifies as good enough in my book, and I keep my
>personal entertainment and bird ID libraries in that format.
>To put it in perspective, the damage done to a recording by MP3
>encoding is an order of magnitude less than dubbing it to analog tape.
>-Dan Dugan

I have a very hard time distinguishing 256kbps from the 16 bit 
original but I believe I can begin to detect small differences in a 
Logic Audio-encoded mp3 at 192kbps. The 96kbps encoding seems to be 
quite different.

This QuickTime movie
has an uncompressed, 16bit sound track with the original and three 
mp3 encoded samples. I imported the generated mp3's back into Logic 
Audio to create the 16 bit movie soundtrack.

1) 16 bit orig ->  16 bit movie soundtrack

2) 16 bit orig -> 256 kbps mp3 -> 16 bit movie soundtrack

3) 16 bit orig -> 192 kbps mp3 -> 16 bit movie soundtrack

4) 16 bit orig -> 96 kbps mp3 -> 16 bit movie soundtrack

I sense that the most common quality hit stems from folks just using 
the default setting on their mp3 encoder application. Most apps I've 
used default to 128kbps or lower.  Rob D.

<Prev in Thread] Current Thread [Next in Thread>

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the naturerecordists mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU