Mazda 2012 CX-7 Spécifications télécharger pdf (Page 234)

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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 encodi ng 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 simil ar.

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.

qOperating Tips for WMA

WMA is short for Windows Media Audio

and is the audio compression format used

by Microsoft.

Audio data can be created and stored at a

higher compression ratio than MP3.

* Microsoft and Windows Media are

registered trademarks of Microsoft

Corporation U.S. in the United States

and other countries.

Playable WMA files are as follows:

Item Content

Audio Type Type A Type B

Specification

Windows

Media Audio

Version 7.0,

8.0, 9.0

(standard), 10.0

(standard)

Ver 9.0

standard (L1)

Sampling rate 32/44.1/48 kHz

Bit rate 32―320 kbps

CAUTION

This unit plays files with the (.wma)

file extension as a WMA file. Do not

use the WMA file extension for files

other than WMA files. Otherwise, it

could result in noise or a

malfunction.

5-20

Interior Features

Audio System

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