android
  #1  
Old 12-15-2007, 06:29 PM
wayland wayland is offline
Junior Member
 
Join Date: Jun 2007
Posts: 20
Default codecs and power usage

sorry if this has been asked i searched but couldnt see anything, does the codec in use significantly affect battery drain? (codecs i have in mind are mp3, ogg, wavpack and flac).

my reason for asking is i recently put around 2gig/6 cd's of music on my sansa in flac format because i couldn't be bothered transcoding them and flac managed to achieve a very good compression ratio on them but i was wondering if i would be better off replacing them with another format.
Reply With Quote

Advertisement [Remove Advertisement]

  #2  
Old 12-15-2007, 06:42 PM
Jiiprah's Avatar
Jiiprah Jiiprah is offline
Member
 
Join Date: Aug 2007
Location: Cumming, GA
Posts: 191
Default

I would like to know the same. Which audio format will achieve the best battery life?
__________________
The Graphics Folder: www.thegraphicsfolder.com
Reply With Quote

  #3  
Old 12-15-2007, 09:05 PM
saratoga saratoga is offline
Rockbox Developer / Moderator
 
Join Date: Apr 2007
Posts: 3,628
Default

http://www.rockbox.org/twiki/bin/vie...anceComparison

Look at the H10 results since they use almost the same CPU.

Codecs faster then ~300% realtime don't save any additional power as they get faster, but slower ones do as they approach that point.
Reply With Quote

  #4  
Old 12-16-2007, 04:17 AM
Llorean Llorean is offline
Rockbox Developer
 
Join Date: Dec 2006
Posts: 397
Default

Remember also that filesize is very important on disk players. Once you get past the 300% or so mark, the smaller the files, the better (generally speaking, assuming you don't skip forward often, or much).

On flash players such as the Sansa, you can expect somewhat different results than the H10 just because power consumption for buffering will be different. That being said, it simply makes the % realtime much more the deciding factor.
Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT -5. The time now is 08:45 PM.