1. Join Now

    AVForums.com uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

What is the difference...

Discussion in 'Headphones, Earphones & Portable Music' started by myepitome, Aug 24, 2005.

  1. myepitome

    myepitome
    Guest

    Products Owned:
    0
    Products Wanted:
    0
    Ratings:
    +0
    Just a quick question, but what is the difference between constant and variable bitrate?
     
  2. pjskel

    pjskel
    Well-known Member

    Joined:
    Oct 12, 2004
    Messages:
    2,676
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    83
    Location:
    UK
    Ratings:
    +124
    Constant (as the name suggests) uses a fixed rate at which to encode the song. Variable (as its name suggests) uses a variable rate to encode the song, more bits for more complex parts, less for less complex.
    An acoustic guitar on its own wouldn't need a lot of bits, whereas a full blown orchestra at full tilt with everything going on would need more to capture each sound adequately.
    Personally, I find CBR to soud sufficiently better than VBR, that I use it exclusively. After that, LAME is a touch better than other MP3 codecs.
     
  3. Steven

    Steven
    Senior Moderator

    Joined:
    Feb 1, 2005
    Messages:
    36,464
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    166
    Ratings:
    +6,239
    as above, and VBR should be less batt intensive, since player works less for "simple" period of songs. And you save space
     
  4. pjskel

    pjskel
    Well-known Member

    Joined:
    Oct 12, 2004
    Messages:
    2,676
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    83
    Location:
    UK
    Ratings:
    +124
    Actually, apparently VBR songs eat the battery more since there's more processing needing done on playback.
    Sounds plausible since the processor is constantly changing the decoding rate whereas the CBR is a set value from start to finish.
     

Share This Page

Loading...