I recently got a reminder of how often lossy compression technologies such as MP3, AAC and Dolby Digital are misunderstood, when another journalist sent me an e-mail critiquing an article I’d written. Of course, once I got to thinking about the subject, I started to see more evidence of such confusion in the comments sections following articles here and on other sites.
In all of these cases, the person commented about the reduction in dynamic range caused by MP3. Having worked at Dolby Labs back in 2000 to 2002, I knew right away that these commenters’ knowledge about lossy compression was incomplete. But their comments got me curious. I’ve used MP3 for almost two decades, but I’d never actually looked at its effects on an audio waveform. So I decided to do just that, and to find out whether or not MP3 can really affect dynamic range.
Full story Via audiophilereview.com