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

1 comments:
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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