Streaming - Sony Ericsson Z500a White Paper

Songs may be stored in the internal Z500a user memory.
The folder system enables the user to organize songs into
groups and create simple playlists of MP3 songs.
Songs may be collected in numerous ways, including
Internet download and file transfer from a PC.
The Media player is intelligently aware of other
applications in the phone:
• Playback is paused when a telephone call is made or
received.
• Playback is paused if the user starts another applica-
tion which requires the audio channels to be dedi-
cated to it.
• Playback of MP3 files continues if the user switches
to another application, providing music while using
other applications such as the phonebook or calendar,
or playing games.
Polyphonic ringtones
Background
The word "polyphony" means producing several tones at
the same time. Almost all music that we listen to consists
of polyphonic melodies.
Early Ericsson mobile phones supported a proprietary
non-polyphonic format called eMelody. Due to the
musical limitations of eMelody, and the popularity of
creating, sending and downloading ring melodies,
Ericsson and Sony Ericsson, together with other
manufacturers, created the more advanced non-
polyphonic sound format – iMelody.
MIDI – Musical Instrument Digital Interface – is a
specification for a communications protocol principally
used to control electronic musical instruments. The MIDI
files are small, and perfect for mobile devices, which
have limited storage capacity. MIDI is today a well
known standard used by many musicians, composers,
arrangers and so on.

Streaming

Streaming media is a method of making audio, video
clips and other multimedia available in real-time.
Streaming media to computers has been used during the
last couple of years, and now, the technique gives the
A MIDI signal or file does not contain any music. It
contains binary data (information) of how a melody is
played and when this data reaches a synthesizer, the
synthesizer will translate the binary data to music, when
connected to an amplifier with speakers so that the sound
becomes audible.
Please visit www.midi.org
SP-MIDI
SP-MIDI stands for Scalable Polyphony MIDI. SP-MIDI
is based on the MIDI format and adapted for mobile
phones and other portable products. The objective is to
secure interoperability between products with different
sound capabilities.
Video clips
Moments can easily be shared with friends and family in
other geographical sites by capturing the moment with
the video recorder and then sending the video clip in a
picture message. The video recorder supports QCIF at 10
frames per second.
The Media player supports download and playback of
MPEG-4 and H.263 formats for viewing video clips in
the phone.
Video clips may be downloaded from the Internet or
copied from a connected PC. Video files are large
compared to still images (roughly 1 MB per 1 second of
video).
Files must be of types MP4 or 3GP, having video
encoded in MPEG-4 Simple Visual Profile and audio in
AAC or AMR format. Video may also be encoded in
H.263.
Streaming Support
The Media player can be launched from hyperlinks in the
Browser or in messages. Content is streamed using RTSP
(Real Time Streaming Protocol) session control.
user a high-quality experience.
9
Z500a
White Paper
for more information.
June 2004