compression ratio NISSAN 370Z ROADSTER 2014 Z34 Owners Manual

4-36Center display, heater, air conditioner, audio, phone and voice recognition systems
.An incorrect song title may appear when the
Play Mode is changed while using an iPod
nano
®(2nd Generation)
. Audiobooks may not play in the same order
as they appear on an iPod
®.
. Large video files cause slow responses in an
iPod
®. The vehicle center display may
momentarily black out, but will soon recover.
. If an iPod
®automatically selects large video
files while in the shuffle mode, the vehicle
center display may momentarily black out,
but will soon recover.
Compressed Audio Files (MP3/WMA/
AAC) (if so equipped)
Explanation 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 can reduce the file size by
approximately a 10:1 ratio (Sampling: 44.1
kHz, Bit rate: 128 kbps) with virtually no
perceptible loss in quality. The compression
reduces certain parts of sound that seem
inaudible to most people. .
WMA — Windows Media Audio (WMA) is a
compressed audio format created by Micro-
soft 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.
. AAC/M4A — Advanced Audio Coding
(AAC) is a lossy audio compression format.
Audio files that have been encoded with
AAC are generally smaller in size and deliver
a higher quality of sound than MP3.
. 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
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, album title,
encoding bit rate, track time duration, etc.
ID3 tag information is displayed on the
Album/Artist/Track title line on the display.
* Windows
®and Windows Media®are regis-
tered trademarks or trademarks of Microsoft
Corporation in the United States of America
and/or other countries.

Compressed Video Files (models with
navigation system)
Explanation of terms:
.DivX®- DivX®refers to the DivX®codec
owned by DivX, Inc. used for a lossy
compression of video based on MPEG-4.
. AVI - AVI stands for Audio Video Interleave.
It is a standard file format originated by
Microsoft Corporation. A “.divx” encoded file
can be saved into the “.avi” file format for
playback on this system if it meets the
requirements stated in the table in this
section. However, not all the “.avi” files are
playable on this system since different
encodings can be used than the DivX
®
codec.
. ASF - ASF stands for Advanced Systems
Format. It is a file format owned by Microsoft
Corporation. Note: Only “.asf” files that meet
the requirements stated in the table in this
section can be played.
. Bit rate — Bit rate denotes the number of
bits per second used by a digital video file.
The size and quality of a compressed digital
audio file is determined by the bit rate used
when encoding the file. Requirement for Supporting Video Playback:
Media
CD, CD-R, CD-RW, DVD, DVD±R, DVD±RW, DVD±RW DL, USB 2.0 Memory
File Systems CD, CD-R,
CD-RW,
DVD,
DVD±R,
DVD±RW,
DVD±RW DL ISO9660 LEVEL1, ISO9660 LEVEL2, Romeo, Joliet, UDF Bridge
(UDF1.02+ISO9660) , UDF1.5, UDF2.0
- ISO9660 Level 3 (packet writing) is not supported.
- Files saved using the Live File System component (on a Windows
Vista-based computer) are not supported.
- VDF1.5/VDF2.0 (packet writing) is not supported.
USB Memory FAT16, FAT32
File Types .divx, .avi Video CodecsDivX3, DivX4, DivX5, DivX6
Audio Codecs MP3, MPEG2.5 Audio Layer3, AC3, LPCM
.asf Video Codec ISO-MPEG4
Audio Codec G.726
Bit Rates .divx, .avi Maximum Average 4Mbps
Maximum Peak 8Mbps
Resolution .divx, .avi Minimum32632
Maximum 7206480
.asf Minimum 32632
Maximum 7206576
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4-58Center display, heater, air conditioner, audio, phone and voice recognition systems
Key (DVD-VIDEO):
Keys for the DVD menu operation are displayed.
: Move the cursor to select a DVD menu.
Enter: Enter the selected menu.
Move: Change the display location by moving the operation key.
Back: Return to the previous screen.
Hide: Hide the operation key.
Title Menu (DVD-VIDEO):
Some menus specific to each disc will be
shown. For details, see the instructions on the
disc.
Title Search (DVD-VIDEO, DVD-VR):
The scene with the specified title will be
displayed each time the “+” side or “ −” side is
selected.
Group Search (VIDEO CD):
A scene in the specified group will be displayed
each time the “+” side or “−” side is selected.
10 Key Search (DVD-VIDEO, VIDEO-CD,
CD-DA, DVD-VR):
Select the “10 Key Search” key to open the
number entry screen. Input the number to be
searched and select the “OK” key. The specified
Title/Chapter or Group/Track will be played. Select No. (VIDEO-CD):
Select the “Select No.” key to open the number
entry screen. Input the number to be searched
and select the “OK” key. The specified scene
will be played.
Angle (DVD-VIDEO):
If the DVD contains different angles (such as
moving images), the current image angle can be
switched to another one. Select the “Angle” key.
The angle will change each time the “+” side or
“−” side is selected.
Angle Mark (DVD-VIDEO):
When this item is turned on, an angle mark will
be shown on the bottom of the screen if the
scene can be seen from a different angle.
Menu Skip (DVD-VIDEO):
DVD menus are automatically configured and
the contents will be played directly when the
“Menu Skip” key is turned on. Note that some
discs may not be played directly even if this item
is turned on.
CM Skip (DVD-VIDEO):
Select the “CM Skip” key. Choose the setting
time from 15, 30 or 60 seconds by selecting the
“+” side or “−” side. DRC (DVD-VIDEO, DVD-VR):
DRC (Dynamic Range Compression) automati-
cally adjusts the soundtrack volume level to
maintain a more even sound to the speakers.
DVD Language (DVD-VIDEO, VIDEO-CD):
Select the “DVD Language” key to open the
number entry screen. Input the number corre-
sponding to the preferred language and select
the “OK” key. The DVD top menu language will
be changed to the one specified.
Display:
To adjust the image quality of the screen, select
the preferred adjustment items.
Audio:
Select the preferred language for audio.
Subtitle (DVD-VIDEO, DVD-VR):
Select the preferred language for subtitles.
Display Mode (DVD-VIDEO, VIDEO-CD,
DVD-VR):
Select from the “Full”, “Wide”, “Normal” or
“Cinema” modes.
Title List (DVD-VR):
Select the preferred title from the list.
Play Mode:
Select the preferred play mode.