Nokia N73 Music Edition

Page 47
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Media applications
47
Refreshed
—The date when the library was last modified
Set a song as a ringing tone
1
Select a song.
2
Select 
Options
> 
Set as ringing tone
. The selected 
song has been set as the ringing tone for the active 
profile.
Change album art
1
Select a song.
2
Select 
Options
> 
Album art
.
3
Select 
Options
> 
Change
.
4
Scroll through images in the gallery of your device, and 
select 
Select:
.
5
To restore the original album art, select 
Restore 
original
.
About encoded audio
Applications like Windows Media Player, and Nokia Audio 
Manager (included in the Nokia PC Suite) encode audio 
files with codecs such as WMA or MP3 to save storage 
space. The encoding is done by removing those parts of the 
audio signal that are not audible or only barely audible by 
human ear. 
Regardless of the encoder and codec quality, the sound 
quality of the resulting file is not as good as the original. 
The basic codecs supported by this device are AAC, WMA, 
and MP3. All of these have different variations. 
Bitrates
When encoding audio, the quality of the resulting sound 
depends on the sample rate and bit rate used for the 
encoding. Sample rate is expressed as thousands of 
samples per second (kHz), and for CD music the sample 
rate is fixed at 44.1 kHz. Bit rate is expressed as kilobits 
per second (Kbps). The higher the bitrate, the better the 
sound quality.
The required quality level may depend on your demands, 
the headsets used, and the surrounding noise. For MP3s a 
bitrate between 128 and 192 Kbps usually gives results 
good enough for listening to pop music with your device.  
WMA or AAC generally gives a similar result as MP3 with 
one step lower bitrate (96-160 Kbps). Variations of AAC, 
such as AAC+ and enhanced AAC+ (eAAC+) provide CD 
quality audio at bitrates as low as 48 Kbps. Classical music 
and music with nuances usually require a higher bitrate 
than basic pop music.
For speech or other sources where the quality of the sound 
is less important than saving storage space, you can use 
bitrates between 8 and 64 Kbps. At low bitrates WMA or 
AAC generally gives better results than MP3.
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