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• Select another input source (like
DVD/CD
),
then switch back to
USB
.
• Use a dedicated AC adapter (supplied with
the device) for USB power.
If this doesn’t remedy the problem, it is likely
your USB device is incompatible.
Compressed audio compatibility
Note that although most standard bit/
sampling rate combinations for compressed
audio are compatible, some irregularly
encoded files may not play back. The list below
shows compatible formats for compressed
audio files:
•
MP3
(MPEG-1/2/2.5 Audio Layer 3) –
Sampling rates: 8 kHz to 48 kHz; Bit rates:
8 kbps to 320 kbps (128 Kbps or higher
recommended); File extension:
.mp3
•
WMA
(Windows Media Audio) – Sampling
rates: 32 kHz / 44.1 kHz; Bit rates: 32 kbps
to 192 kbps (128 Kbps or higher
recommended); File extension:
.wma
;
WM9 Pro and WMA lossless encoding: No
•
AAC
(MPEG-4 Advanced Audio Coding) –
Sampling rates: 11.025 kHz to 48 kHz; Bit
rates: 16 kbps to 320 kbps (128 Kbps or
higher recommended); File extension:
.m4a
; Apple lossless encoding: No
Other compatibility information
• VBR (variable bit rate) MP3/WMA/MPEG-4
AAC playback: Yes
1
• DRM (Digital Rights Management)
protection compatible: Yes (DRM-
protected audio files will not play in this
receiver).
About MPEG-4 AAC
Advanced Audio Coding (AAC) is at the core of
the MPEG-4 AAC standard, which incorporates
MPEG-2 AAC, forming the basis of the MPEG-4
audio compression technology. The file format
and extension used depend on the application
used to encode the AAC file. This unit plays
back AAC files encoded by iTunes
®
bearing the
extension '
.m4a
'. DRM-protected files will not
play, and files encoded with some versions of
iTunes
®
may not play.
Apple and iTunes are trademarks of Apple Computer,
Inc., registered in the U.S. and other countries.
About WMA
The Windows Media
®
logo printed on the box
indicates that this receiver can playback
Windows Media Audio content.
WMA is an acronym for Windows Media Audio
and refers to an audio compression technology
developed by Microsoft Corporation. This unit
plays back WMA files encoded using Windows
Media
®
Player bearing the extension '
.wma
'.
Note that DRM-protected files will not play, and
files encoded with some versions of Windows
Media
®
Player may not play.
Microsoft, Windows Media, and the Windows logo are
trademarks, or registered trademarks of Microsoft
Corporation in the United States and/or other countries.
Note
1 Note that in some cases playback time will not be displayed correctly.
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