Mazda 2013 CX-9, Руководство пользователя

Страница: 290 / 597

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.
q
Operating 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
Specification
Ver 7.0, 8.0, 9.0
(standard)
Ver 10 (standard)
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.
l
Track, artist and album name
information is recorded as data termed
“
WMA-Tag
”
, and this information is
displayable.
l
WMA files written under specifications
other than the indicated specification
may not play normally or files or folder
names may not display correctly.
l
The file extension may not be provided
depending on the computer operating
system, version, software, or settings.
In this case, add the file extension
“
.wma
”
to the end of the file name, and
then write it to the disc.
q
Operating Tips for AAC
Advanced Audio Coding (AAC) is
standardized voice compression
established by the ISO
*1
working group
(MPEG). Audio data can be created and
stored at a higher compression ratio than
MP3.
*1 International Organization for
Standardization
Playable AAC file specifications
This unit supports playback of AAC files
recorded in CD-R and CD-RW.
Playable AAC files are as follows:
Item Content
Specification MPEG-4 AAC
Sampling rate
8/11.025/12 kHz
16/22.05/24 kHz
32/44.1/48 kHz
Bit rate 24
―
320 kbps
CAUTION
This unit plays files with the file
extension (.m4a) as an AAC file. Do
not use the AAC file extension for files
other than AAC files. Otherwise, it
could result in noise or a
malfunction.
Interior Comfort
Audio System
6-25