Nokia NSERIES N73 User Manual

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Nokia NSERIES N73 User Manual Manual pdf 47 page image

Media applications47Refreshed—The date when the library was last modifiedSet a song as a ringing tone1 Select a song.2 Select Options > Set as ringing tone. The selectedsong has been set as the ringing tone for the activeprofile.Change album art1 Select a song.2 Select Options > Album art.3 Select Options > Change.4 Scroll through images in the gallery of your device, andselect Select:.5 To restore the original album art, select Restoreoriginal.About encoded audioApplications like Windows Media Player, and Nokia AudioManager (included in the Nokia PC Suite) encode audiofiles with codecs such as WMA or MP3 to save storagespace. The encoding is done by removing those parts of theaudio signal that are not audible or only barely audible byhuman ear.Regardless of the encoder and codec quality, the soundquality 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.BitratesWhen encoding audio, the quality of the resulting sounddepends on the sample rate and bit rate used for theencoding. Sample rate is expressed as thousands ofsamples per second (kHz), and for CD music the samplerate is fixed at 44.1 kHz. Bit rate is expressed as kilobitsper second (Kbps). The higher the bitrate, the better thesound quality.The required quality level may depend on your demands,the headsets used, and the surrounding noise. For MP3s abitrate between 128 and 192 Kbps usually gives resultsgood enough for listening to pop music with your device.WMA or AAC generally gives a similar result as MP3 withone step lower bitrate (96-160 Kbps). Variations of AAC,such as AAC+ and enhanced AAC+ (eAAC+) provide CDquality audio at bitrates as low as 48 Kbps. Classical musicand music with nuances usually require a higher bitratethan basic pop music.For speech or other sources where the quality of the soundis less important than saving storage space, you can usebitrates between 8 and 64 Kbps. At low bitrates WMA orAAC generally gives better results than MP3.