Chapter 13. Advanced Topics 210
13.5.4. Audio format and bitrate
In general the fastest decoding audio format will be the best in terms of battery runtime
on your player. An overview of different codec’s performance on different players can be
found at ZCodecPerformanceComparison.
Your target uses flash that consumes a certain amount of power during access. The
less often the flash needs to be switched on for buffering and the shorter the buffering
duration is, the lower is the overall power consumption. Therefore the bitrate of the
audio files does have an impact on the battery runtime as well. Lower bitrate audio files
will result in longer battery runtime.
Please do not re-encode any existing audio files from one lossy format to another based
upon the above mentioned. This will reduce the audio quality. If you have the choice,
select the best suiting codec when encoding the original source material.
13.5.5. Sound settings
In general all kinds of sound processing will need more CPU time and therefore consume
more power. The less sound processing you use, the better it is for the battery runtime
(for options see section 6 (page 54)).
The Rockbox manual (version 3.14) Sansa Fuze+
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