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APPENDIX
What is the bit rate?
Data flow per second denoted by “kbps.”
Audio Manager allows you to select a bit
rate of 160, 128, 96, 80, or 64 kbps for
WMA format encoding and 320, 256, 192,
128, 96, 80, or 64 kbps for MP3 format
encoding.
What is a variable bit rate (VBR)?
The variable bit rate (VBR) encoding
method allocates fewer bits to silent
sections or those with relatively narrow
stereo separation, and allocates additional
bits to sections that have relatively wide
stereo separation. The constant bit rate
encoding method uses a consistent bit
rate throughout an encoded file. VBR
allows smaller encoded file sizes without
compromising sound quality. However,
VBR is not recommended if you want the
MP3 player to report accurate information
about the duration of MP3 files, since it is
difficult to predict MP3 file size.
What is the CDDB?
A database server that provides
information about a music CD in your
computer’s CD-ROM drive. CDDB-
enabled encoding software will search
the CDDB database on the Internet for
information about your music CD, such
as the album title, artist names, and track
titles, and automatically enter the
information to its track list. You do not
have to manually enter information about
your music CD.
What is SDMI?
The Secure Digital Music Initiative, a forum
founded to develop technological
specifications for enabling the secure
distribution and use of music in digital
form, as well as providing copyright
protection for artists’ work.
SDMI-compliant music files have the
following transfer restrictions:
• You can copy a music file as many times
as the information encrypted in the file
allows.
• You can transfer a music file to up to 3
SDMI-compliant portable players only
from the computer that was used to
download or record the file.
When a music file is downloaded from
an SDMI-compliant music data
distribution site, the number of players
to which you can transfer the music file
is governed by the information contained
in the file.
• You can play a music file stored on a
MultiMediaCard if the player unit is the
same one that was used to transfer the
music file.