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White paper Sony Ericsson P1
29 May 2007
Play modes
The Media player has two different play modes:
shuffle and loop.
• Shuffle plays a randomly selected file from the
current playlist. Played files are de-selected and
not repeated.
• Loop restarts the playlist when the last item in
the list is reached.
DRM protection
In Sony Ericsson P1 the following types of DRM
protection are used: FWL (Forward Lock), CD
(Combined Delivery) and SD (Separate Delivery). All
protection types can be applied on MP3, AAC and
MPEG4 files. See “DRM” on page 47 for more
information.
All protection types can be applied to all types of
multimedia content such as audio, video, images
and Java midlets.
Ringtones
Ringtones can be played in the Media player. Any
file in a supported audio format can be used as a
ringtone as long the operator has not disabled that
format for ringtone use.
Ringtones can be downloaded using PlayNow™ or
created using MusicDJ™.
Streaming
Media player content is streamed using RTSP (Real
Time Streaming Protocol) session control,
according to the 3GPP specification.
Audio support is AMR-NB, AAC, AAC+ and
eAAC+, according to 3GPP.
3GPP specifies the following codecs:
• MPEG-4 Visual Simple Profile Level 0-3
• H.263 Profile 0 Level 10
Sony Ericsson P1 also supports:
•Real Audio
• Real Audio Video
Media formats
Audio formats
Format Description
AAC-LC Advanced Audio Coding. AAC is the latest audio coding standard, defined in the
MPEG-2 standard and 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 per
cent lower bit rate. It supports 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).
The Media player can play AAC-LC format audio which is encoded into an MPEG-4 file
or stream. The Sound recorder uses the AAC-LC format for recording. AAC-LC
includes High Efficiency AAC+.
AMR-NB Adaptive Multi Rate. AMR-NB is a speech compression format that is highly optimized
for the mobile environment, requiring as little as 4.75 Kbps bandwidth. AMR-NB is
used to convey voice recordings in MMS, 3GPP video clips or streams. Sony Ericsson
P1 records AMR using 12.2 Kbps with a sample rate of 8 kHz.