compression ratio NISSAN MURANO 2007 1.G Owners Manual

The following CDs may not work prop-
erly:
•Copy control compact discs (CCCD)
•Recordable compact discs (CD-R)
•Rewritable compact discs (CD-RW)

Do not use the following CDs as they
may cause the CD player to malfunction.
•3.1 in (8 cm) discs with an adapter
•CDs that are not round
•CDs with a paper label
•CDs that are warped, scratched, or
have abnormal edges

CDs with MP3 or WMA format cannot be
written by this audio system.

If the CD cannot be played, one of the
following messages will be displayed.
CHECK DISC:
•Confirm that the CD is inserted cor-
rectly (the label side is facing up,
etc.).
•Confirm that the CD is not bent or
warped and it is free of scratches.
PUSH EJECT:This is an error due to the temperature
inside the player is too high. Remove
the CD by pushing the EJECT button,
and after a short time reinsert the CD.
The CD can be played when the tem-
perature of the player returns to normal.
UNPLAYABLE:
The file is unplayable in this audio sys-
tem (only MP3 or WMA CD).
Compact Disc (CD) with MP3 or
WMAExplanation of terms:

MP3 — MP3 is short for Moving Pictures
Experts Group Audio Layer 3. MP3 is the
most well known compressed digital audio
file format. This format allows for near “CD
quality” sound, but at a fraction of the size of
normal audio files. MP3 conversion of an
audio track from CD can reduce the file size
by approximately 10:1 ratio (Sampling: 44.1
kHz, Bit rate: 128 kbps) with virtually no
perceptible loss in quality. MP3 compression
removes the redundant and irrelevant parts of
a sound signal that the human ear doesn’t
hear.

WMA — Windows Media Audio (WMA) is a
compressed audio format created by Mi-crosoft as an alternative to MP3. The WMA
codec offers greater file compression than
the MP3 codec, enabling storage of more
digital audio tracks in the same amount of
space when compared to MP3s at the same
level of quality.

Bit rate — Bit rate denotes the number of bits
per second used by a digital music files. The
size and quality of a compressed digital audio
file is determined by the bit rate used when
encoding the file.

Sampling frequency — The rate at which the
samples of a signal are converted from ana-
log to digital (A/D conversion) per second.

Multisession — Multisession is one of the
methods for writing data to media. Writing
data once to the media is called a single
session, and writing more than once is called
a multisession.

ID3/WMA Tag — The ID3/WMA tag is the
part of the encoded MP3 or WMA file that
contains information about the digital music
file such as song title, artist, encoding bit rate,
track time duration, etc. ID3 tag information is
displayed on the Artist/Track title line on the
display.
* Windows
and Windows Media
are regis-
tered trademarks and trademarks in the
4-30
Display screen, heater, air conditioner and audio systems


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