Average Bitrate (ABR)
In this mode, you choose the encoder will maintain an average bitrate while using higher bitrates for the parts of your music that need more bits. The result will be of higher quality than CBR encoding, and this mode is highly recommended over CBR. This encoding mode is similar to what is reffered as vbr in AAC or Liquid Audio (2 other compression technologies).
trouvé http://www.mp3dev.org/mp3/doc/html/modes.html
c cool je connaissais pas ce truc!
[edit]--Message édité par Largo--[/edit]