White Paper K700
11 February 2004
Technologies in detail

Entertainment

Media player

The media player supports different audio and
video formats, streaming as well as download and
playback.
Music
The media player is a multi-format digital audio
player which enables the user to carry and play a
selection of favourite songs. A range of audio
formats are supported:
• AAC
Advanced Audio Coding. AAC is the latest
audio coding standard, defined in the MPEG-2
standard and is used for high-quality audio
compression. AAC provides higher quality than
MP3 at the same bit rate, or for the same audio
quality it uses a 30 percent lower bit rate. It sup-
ports the coding of multichannel audio, with up
to 48 main channels and 16 low-frequency
channels. The AAC offers three different profiles
to facilitate trade off between quality, memory
and processing power requirements. They
include: Main Profile (MP), Low Complexity (LC)
and Scalable Sampling Rate (SSR).
•AMR
Adaptive Multi Rate. A medium quality com-
pressed sound format.
• MIDI
Musical Instrument Digital Interface.
Unlike the other formats, MIDI is not a reco rding
of music, but a description which enables a
local synthesizer to play the music from the
instructions included in the MIDI file. Since a
MIDI file only represents player information, it is
far more concise than formats that store the
sound directly. An advantage is very small file