Oversimplified listing of the MP3 compressions
This is an notice shown on the same webpageand also refered here separately. This just describes the various compressions levels and thier main use
Here is a oversimplified listing of the MP3 compressions :Notice that as the number in the left pane is higher , the higher the filter and thus higher fidelity audio. The higher numbers can offer the abilities or the lower numbers too.
Notice: The program used for analysis is Music match jukebox that offers the curves shown in my blog above
kbps | approximate usage - |
8 - 11 kbps | suitable for recording telephonic conversations , voice recording . narrowband AM radio |
16 | the above plus high fidelity speech, AM radio, low fidelity streaming radio |
24- 32 kbps | high quality speech , AM radio [medium and shortwaves ] |
44-56 | low fidelity FM radio |
64 | older fidelity FM radio |
96-128 | CD quality audio |
192 | studio CD quality - |
256 | 'Store' mode for CD quality |
and for WMA - fior anyone interested , as tested with Musicmatch Jukebox . For me mostly
5-8-12 | just simple voice recording |
16-22 | high quality speech recording , 22 seems as HIFI |
44 | good for FM |
48 | CD audio compromise , best for mass storage |
64 | CD recording = 128 on MP3 |
96 | 'high quality' CD recording =192 on MP3 |
And notice the following:
The above listing is still controversial and depends on the program and codecs you use. Older lame codec [used in goldwave ] does not offer the same audio quality
And several comments on windows media wma files:
- offering lower dynamic range : they can clip very low voices , The dynamic rrange is aoubt 50 db
- on MP3 hardware players :
- they can drain the double current (Sansa E130 and Creative Zen Plus ).
- in most older MP3 players i tested (as sansa 130 ) , the WMA codec can offer better audio than its MP3 codec!!
- the wma codec may introduce its own noise with 'cracks' in sudden audio changes or in loud points. See also the http://zlgr.multiply.com/reviews/item/32
I have to notice that this listing offers just the MMJB 6 edition. If y look at my newer postings with Bonk and Lame's latest versions there is slighlty different results to the better . as for example 96kb offer nearly transparent audio
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