compression ratio NISSAN LEAF 2014 1.G Owners Manual

•CDs that are in poor condition or are dirty,
scratched or covered with fingerprints
may not work properly.
•The following CDs may not work properly.
–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
•This audio system can only play prere-
corded CDs. It has no capability to record
or burn CDs.
•If the CD cannot be played, one of the
following messages will be displayed.
CHECK DISC:
•Confirm that the CD is inserted correctly
(the label side is facing up, etc.) .
•Confirm that the CD is not bent or warped
and it is free of scratches.PRESS EJECT:
This is an error due to excessive tempera-
ture inside the player. Remove the CD by
pressing the EJECT button. After a short
time, reinsert the CD. The CD can be played
when the temperature of the player returns
to normal.
UNPLAYABLE:
The file is unplayable in this audio system
(only MP3 orWMA(if so equipped) CD) .
Compressed audio files (MP3/WMA)
Terms:
• MP3 — MP3 is short for Moving Pictures Ex-
perts Group Audio Layer 3. MP3 is the most
well-known compressed digital audio file for-
mat. 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-ROM can reduce the file size by ap-
proximately a 10:1 ratio with virtually no percep-
tible 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 Microsoft
as an alternative to MP3. The WMA codecoffers greater file compression than the MP3
codec, enabling storage of more digital audio
tracks in the same amount of space when com-
pared to MP3s at the same level of quality.
• Bit rate — Bit rate denotes the number of bits
per second used by a digital music file. The size
and quality of a compressed digital audio file is
determined by the bit rate used when encoding
the file.
• Sampling frequency — Sampling frequency is
the rate at which the samples of a signal are
converted from analog to digital (A/D conver-
sion) per second.
• Multisession — Multisession is one of the meth-
ods 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/song title line on the display.
* Windows® and Windows Media® are regis-
tered trademarks and trademarks in the United
States of America and other countries of Micro-
soft Corporation of the USA.
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