Δευτέρα, 20 Αυγούστου 2012

Mebook Part #2 : review on audio files !

Music  is the  least interested mode  for this model as I really  have better players   for listening to music !n Anyway for the sake of the experimenting I did  a series of measurements. I used 3 different programs  for making these audio files

Audio  mode :

The above  shot comes from a song provided by  Mebook Two songs are preloaded with it

Each file  shows the  following info as provided from the ID tag :

-artist ,

-track ,

-album  

-album image  if available

-and lyrics I available (provided  by a separate  .lrc   file in same folder with the  song here shwon at the  bottom  part of the screen ! )

Before  you browse the files there is a special settings mode to adjust   the following :

repeat:  1 , all , all repeat intro (10 secs )

play : seq , random

eq(ualizer ): normal  pop rock classic bass  jazz user mode

user mode with 6 bands

display  :lyrics on off

As in the zero part of this review series there are more than 6 formats supported

Here are the  results  from  the most important audio formats

tested  in various  bit rates . I used 3 programs   to produce these audio files


Mp3 format (bit trate ,playback ,shown bitrate )

Mp3 @16kb      yes but 32

Mp3 @40 kb     yes 40

Mp3 @48       &bsp; yes 48

Mp3 @56         yes 56

Mp3 @64        yes 64

Mp3@80         yes 80

Wma (the Microsoft  proprietary format that supposed  to replace mp3 with the half size for same audio fidelity for the sake of dynamic range . Notice that WMA is an updating formart with current version of 10 which is  for audio video . The previous version is 9 and 9.2 As is fund below 9 and 9.2 are supported by mebook  tough  not all bit rates ae supported  )

Wma v9.2 @16     16 (wma version 9.2)

Wma 9.2 @20     not

Wma 9.2 @4    not

Wma 9 32        31

Wma 9 48        48

Wma 9 64        not (why ???)

Open source ogg offering the half bit rate  for same fidelity 

Ogg @48        45

Ogg @64        64 

  AAC the  format for mobile phones?(I think part of the mp4 format ) http://en.wikipedia.org/wiki/Advanced_Audio_Coding?

Aac 24        24

Aac 47         59!

Aac 64        64

M4a 64        unknown file format   (mp4 audio format )

Audio fidelity : Mebook’s audio is just fair using  my Sony’s ‘trebly’ earphones  . If you are looking for better audio you better have to use a more dedicated mp3 player

3/5 for audio 4/5  for the modes . Not tested for flac or ape


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