Sound Retriever Air/Link; Advanced/Auto Sound Retriever For Arc - Pioneer VSX-1130-K Reference Manual

Audio Technologies
Advanced Sound Retriever
1130 830 530
Pioneer's AV receivers feature the Advanced
Sound Retriever, which restores the output of
compressed audio — such as WMA, MPEG-4 AAC,
and MP3 — to the level of CD sound. The Advanced Sound
Retriever creates new signals to restore the minor details left
out during the compression process.
Multi-Channel Advanced Sound Retriever
Advanced Sound Retriever for multi-surround sound is
compatible with DVD soundtracks featuring Dolby Digital or
DTS.
Auto Sound Retriever
1130 830
As shown on right, the upper frequency limit for
playback differs by bit rate and format of the
compressed content. Conventional audio
compensation methods apply a consistent level of adjustment, so
for some content, it may not be optimal, either too much or too
little. Auto Sound Retriever automatically detects the difference
and adjusts accordingly. Therefore, even when listening to
internet radio with various bit rates and formats by station, you
can always enjoy optimised sound.
Auto Sound Retriever for ARC
1130 830
With digital broadcast, although images are displayed in high-
definition, the audio quality is not as high since they are
compressed with various bit rates. By applying Pioneer's Auto
Sound Retriever feature to TV broadcast signals, it adjusts the
effects according to the bit rate transferred via HDMI's ARC
(Audio Return Channel), letting you enjoy digital TV broadcast in
high-definition sound via Pioneer AV receiver.
Sound Retriever AIR
1130 830
When streaming music via Bluetooth, the
sound quality often suffers due to the
compression process. Pioneer's Sound Retriever
AIR is the world's first technology for improving the quality of
Bluetooth transmitted sound. It restores the music cadence lost
through compression, and also reduces the noise generated by
Bluetooth transmission for a better S/N ratio.
Sound Retriever Link
1130 830
Through HDMI connection, Sound Retriever Link
detects the original audio file information such as
source type, codec, and bit rate played on a
compatible Pioneer Blu-ray Disc player, and automatically
switches to the most suitable Sound Retriever. So there is no
need to switch on/off according to the source. Advanced Sound
Retriever is selected for Blu-ray Disc and DVD sources, and Auto
Sound Retriever is selected for other sources.
* Advanced Sound Retriever is selected for all sources when connected with
a non-compatible Blu-ray Disc player.
1130 830
4
AV RECEIVERS REFERENCE GUIDE
Advanced Sound Retriever
Restoration Image
Restoration of lost music cadence
Sound Retriever ON
CD sound Compressed Restored
sound sound
Time Time
Restoration of lost music cadence
Sound Retriever ON
CD sound Compressed Restored
sound sound
Low Middle High Frequency Low Middle High Frequency Low Middle High
Playback Upper Limit Frequency by Bit Rate
25
20
15
10
5
64 96 128 160
Bit rate (kbps)
Upper frequency limit for playback differs by bit rate
and format
Auto Sound Retriever
Compressed Sound
Sound Retriever AIR OFF
Improvement for S/N Ratio
-80
-100
db
-120
1k
Hz
Advanced Sound Retriever
Compensation Effect
+0
-20
-40
-60
-80
Time -100
-120
-140
0 5k 10k 15k 20k
Original Sound
Advanced Sound Retriever ON
Advanced Sound Retriever OFF
Frequency
MP3
WMA
AAC
192 256 320
Restored Sound
Sound Retriever AIR ON
14.5dB
: OFF
: ON
20k
Hz