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best song format

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natanelho:
at the last time i found out that i need to recharge my (rockboxed) clip zip more then once a day if i listen to music a lot that day. i use mp3 format for my songs, and i read somewhere that this isn't the best format for battery usage. i want to know:

1)what is the sound format with the highest sound quality?
2)what is the sound format that uses the smallest amount of battery?

i mean file type that rockbox supports
and i don't care about the memory it takes- i have 16 gb memory chip+ 4 gb internal for my 60 songs

sorry if it isn't the right place to post it - i don't know where should i place this post.

saratoga:
Mp3 is pretty power efficient.  FLAC is maybe a little better.  You can see a table of codecs and bitrates here:

http://www.rockbox.org/wiki/CodecPerformanceComparison#AMS_AS3525v2_w_47_24MHz_PClK_40ARM926EJ_45S_41

natanelho:
i don't understand anything from this table. so you say that flac is better than mp3 by its sound quality?

saratoga:
I did not say that, however flac is a lossless format so by definition it has perfect reproduction.

404_user_not_found:

--- Quote from: natanelho on December 04, 2014, 08:40:56 AM ---1)what is the sound format with the highest sound quality?
2)what is the sound format that uses the smallest amount of battery?

--- End quote ---

1) Uncompressed PCM files (usually *.wav) or compressed with lossless algorithm - FLAC. Forget about hi-rez formats (above than 16 bit, 44100 Hz). Because they make no sense for increasing a quality of music, takes a lot of memory and not supported by hardware of sansa clip zip. They can be played, but they will be converted on the fly to 16 bit, 44100 Hz with worst resampler.
2) Uncompressed PCM files (usually *.wav) or compressed with lossless algorithm - FLAC. Also don't forget that CPU can't lower MHZ to any number. They have a fixed numbers of supported frequencies.


--- Quote from: natanelho on December 04, 2014, 08:40:56 AM ---i don't understand anything from this table.
--- End quote ---
How to interpret codec test


--- Quote from: natanelho on December 04, 2014, 08:40:56 AM ---so you say that flac is better than mp3 by its sound quality?]
--- End quote ---
Of course yes. Also you should read about lossless (flac) and lossy (mp3) codecs in google.

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