2008 MAZDA MODEL CX-7 compression ratio

Black plate (237,1)
About ID3 Tag display
lThis unit can only display ID3 Tag
album, track and artist names that have
been input using Ver.1.0/1.1/2.2/2.3
formats. Any other data that may have
been input cannot be displayed.
lThis unit can only display English
(including numerals) one-byte
characters. Use only English (including
numerals) one-byte characters when
inputting ID3 tags. Two-byte characters
and some special symbols cannot be
displayed.
Specialized glossary
MP3
Abbreviation for“MPEG Audio Layer 3 ”.
A technical standard for audio
compression as decided by an ISO
(International Organization for
Standardization) MPEG working group.
Use of MP3 allows for audio data to be
compressed to approximately a tenth of
the source data size.
ISO 9660
An international standard for logical
formatting of CD-ROM files and folders.
It is divided into three separate levels
based on differences in file naming
procedures, data configuration and other
characteristics.
Multi-session
A session is the complete amount of data
recorded from the beginning to the end of
a single period of CD-ROM, CD-R/CD-
RW data recording. Multi-session refers to
the existence of data from two or more
sessions on a single disc. Sampling
Refers to the process of encoding analog
audio data at regular intervals and
converting it to digital data. The sampling
rate refers to the number of times a
sample is taken in one second and is
expressed in Hz units. Increasing the
sampling rate improves the sound quality
but also increases the data size.
Bit rate
Refers to the volume of data per second,
expressed in bps (bits per second).
Generally, the larger the number of the
transfer bit rate when compressing an
MP3 file, the more information regarding
musical reproduction it carries, and
therefore the better the sound quality.
Packet writing
A general term for the method, similar to
that used for floppy discs or hard drives,
of recording the required file in a single
increment on a CD-R and similar.
ID3 Tag
ID3 tag is a method for storing
information related to the music in an
MP3 file. Information such as track, artist
and album name can be stored. This
content can be freely edited using ID3
editing function software.
VBR
Abbreviation for Variable Bit Rate. While
CBR (Constant Bit Rate) is generally
used, VBR varies the bit rate for audio
compression according to compression
conditions and this allows for
compression with preference given to
sound quality.
Interior Comfort
Audio System
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NOTElCenterpoint®operates optimally with a 2-
channel stereo CD. MP3 audio files can be
played, however, MP3 audio files encoded
with high compression may result in poor
sound quality.
lCenterpoint®is available for 2-channel
stereo audio except for AM radio/FM radio/
SIRIUS digital satellite radio.
* Centerpoint®is a registered trademark
of Bose Corporation.
BEEP setting
The beep-sound when operating the audio
system can be set on or off.
Interior Comfort
Audio System
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Specifications
qEngine
Item Specification
Type DOHC-16V in-line, 4-cylinder
Bore×Stroke 87.5 × 94.0 mm (3.44 × 3.70 in)
Displacement 2,261 ml (2,261 cc, 137.9 cu in)
Compression ratio 9.5
qElectrical System
Item Classification
Battery 12V-48AH/5HR MF
12V-55AH/5HR MF
Spark-plug number L3K9 18 110A
*1
L3Y3 18 110
Spark-plug gap 0.70―0.80 mm (0.028 ―0.031 in)
*1 ex factory
CAUTION
When cleaning the iridium plugs, do not use a wire brush. The fine particulate
coating on the iridium alloy and platinum tips could be damaged.
q Lubricant Quality
Lubricant Classification
Engine oil Refer to the recommended SAE viscosity numbers on page 8-19.
Automatic transaxle fluid JWS3309
Transfer case oil API Service GL-5 (SAE 80W-90)
Rear differential oil API Service GL-5 (SAE 80W-90)
Power steering fluid ATF M-III, M-V, or equivalent (e.g. Dexron® II)
Brake fluid SAE J1703, or FMVSS116 DOT-3
10-4
Specifications
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66
Before
UseGetting
started
RoutingAddress
Book
Vo i c e Recognition
Navigation
Set Up
RDM-TMC
Audio Operation
Navigation
Set Up
nOperating tips for MP3
l
This audio system handles MP3 files that
have been recorded on CD-R/CDRW/CD-
ROMs. Discs that have been recorded
using the following formats can be played:
• ISO9660 level 1
• ISO 9660 level 2
• Joliet extended format
• Romeo extended format
l This unit handles MP3 files conforming to
the MP3 format containing both header
frames and data frames.
l If a disc has both music data (CD-DA) and
MP3 files, playback of the two file types
differs depending on how the disc was
recorded.
l Packet written discs cannot be played on
this unit.
l This unit does not play CDs recorded
using MP3i (MP3 interactive), MP3 PRO
and RIFF MP3 formats. Specialized glossary
MP3
Abbreviation for “MPEG Audio Layer 3”.
A technical standard for audio compression
as decided by an ISO (International
Organization for Standardization) MPEG
working group.
Use of MP3 allows for audio data to be
compressed to approximately a tenth of the
source data size.
ISO 9660
An international standard for logical
formatting of CD-ROM files and folders.
It is divided into three separate levels based
on differences in file naming procedures,
data configuration and other characteristics.
Bit rate
Refers to the volume of data per second,
expressed in bps (bits per second).
Generally, the larger the number of the
transfer bit rate when compressing an MP3
file, the more information regarding musical
reproduction it carries, and therefore the
better the sound quality.
Packet writing
A general term for the method, similar to that
used for floppy discs or hard drives, of
recording the required file in a single
increment on a CD-R and similar.
NOTE
Supply of this product only conveys a
license for private, non-commercial use
and does not convey a license nor imply
any right to use this product in any
commercial (i.e. revenue-generating) real
time broadcasting (terrestrial, satellite,
cable and/or any other media),
broadcasting/streaming via the Internet,
intranets and/or other networks or in other
electronic content distribution systems,
such as pay-audio or audio-ondemand
applications. An independent license for
such use is required. For details, please
visit http://www.mp3licensing.com.
CAUTION
This unit can only play MP3 files that have
an MP3 file extension (.mp3) attached.
Do not attach an MP3 file extension to
any other type file as it could cause noise
to be emitted or a malfunction in the unit.
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