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06 07
Direct Mechanical Ground Construction, embodying concepts for thor-
ough vibration resistance
The power transformer, itself a source of vibration, has been placed near the
ground and immediately above the insulators to allow direct release to the ground and
thoroughly prevent the propagation of unwanted vibration or noise.
- Hybrid construction (using heterogenous materials) with dual-layer top cover and
triple-layer bottom cover suppresses vibration and resonance.
- B.M.C. side panels in high-specific-gravity and high-density hybrid construction
suppress vibration and resonance.
- Cast-iron insulators absorb vibration and release it to the ground.
Denon’s original Advanced S.V.H. Mechanism, newly developed for low
specific gravity, vibration resistance, quiet operation, and high precision
Denon disc drive mechanisms in the DVD-5910, DVD-3800BDCI and other digital
disc players have received high acclaim. For the DVD-A1UDCI flagship, Denon developed
the Advanced S.V.H. Mechanism to achieve improved vibration resistance and
quieter operation. The quiet disc loading mechanism ensures the stability demanded
by this top-of-the-line model. Furthermore, by positioning the disc mechanism at a
low location, it has become possible to achieve a low center of gravity for the disc
mechanism and a construction highly resistant to internal vibration caused by disc
rotation and external vibration.
- Heavy-duty dual-layer steel
top cover
- Heavy-duty clamper cover
- Zinc diecast mechanism case
- Steel shaft with specially
fabricated surface
- Newly-developed floating
dampers
- Thin aluminium diecast tray
7-block Structure, to thoroughly prevent mutual interference caused by
electrical and magnetic factors
The 7 blocks made up of the power unit for analog circuits, the power unit for
digital circuits, the server section, the digital signal processing section, the video
section, the 2-channel audio section, and the multi-channel audio section have been
separated to prevent mutual interference from electrical and magnetic factors. This
superb separate structure ensures high picture and sound quality.
Dynamic Discrete Surround Circuit-HD, achieving high-quality sound
The D.D.S.C. is a Denon proprietary circuit configuration that features a discrete
arrangement of signal processing circuits for each block, required for audio
playback, to realize Denon’s ideal for audio components of faithfully reproducing
the content producer’s original intentions. The best possible high-grade dedicated
circuitry has been used for each block to ensure optimum performance. With the
advent of Blu-ray, the volume of information is dramatically greater than that of DVD,
delivering improvements in quality for both video images and sound. The DDSC-HD
is configured of a high-bit audio decoder section, a bus management section, the
Advanced AL32 Processing Multi Channel section, and an analog audio section with
a 192-kHz, 32-bit D/A converter to reproduce high-quality sound and bring out the
superior quality of Blu-ray sound to the maximum extent.
Advanced AL32 Processing Multi Channel, to further improve proprietary
technology that optimizes HD audio performance, used for the first time in
the DVD-A1UDCI
In 1993, Denon unveiled “AL” Processing, a technology that expanded 16-bit digital
signals recorded on CD to 20 bits to produce a waveform that was close to that of
the original sound. This marked the beginning of “AL” Processing’s history of original
waveform reproduction technology.
“AL” Processing evolved further with the advent of various new digital disc media
such as DVD and Super Audio CD. This evolution progressed from AL24 Processing and
AL24 PLUS Processing to Advanced AL24 Processing that achieved sampling frequency
expansion, where data is interpolated along the time axis in addition to bit expansion.
Now with the appearance of Blu-ray, Denon has developed Advanced AL32
Processing that further expands the number of bits from 24 to 32 to maximize the
exceptional audio performance of Blu-ray. With distortion-free sonic details, accurate
sound localization, and rich low range, Advanced AL32 Processing is able to reproduce
the original sound with greater fidelity.
In the DVD-A1UDCI, this newly-developed Advanced AL32 Processing is
employed for the 2-channel balanced circuit and for 8 channels, resulting in Advanced
AL32 Processing Multi Channel, to bring out the true value of this reference-class
Blu-ray player.
192-kHz, 32-bit D/A Converter
Along with the bit expansion of Advanced AL32 Processing Multi Channel, one
192-kHz, 32-bit D/A converter has been dedicated to each channel in the 2-channel
balanced circuit, and four more of these converters are employed for 8-channel playback.
Since each has been installed in its own independent audio circuit, audio performance
has been improved in such areas as S/N ratio, dynamic range, and channel separation.
Multi-channel support from Denon’s proprietary Compressed Audio
Restorer function
To reduce data volume, audio compression formats remove signals that are hard
for the human ear to hear. Compressed Audio Restorer regenerates the signals that
were removed during compression and restores the sound close to its condition prior
to compression. This function also corrects the sense of mass in the low range to
produce a richer sound during playback. Compressed Audio Restorer now supports
multi-channel playback for the first time, delivering an eminently satisfying sound from
such audio compression formats as Dolby Digital, DTS, MP3, and WMA.
AV Pure Direct (two HDMI output ports)
The DVD-A1UDCI is equipped with two HDMI output ports, making it possible
to send only the video signal to a projector and only the audio signal (2-channel
or multi-channel) to an A/V surround receiver. Greater picture and sound quality is
achieved, as mutual interference is physically eliminated.
Dolby Pro Logic IIx and DTS Neo:6 decoding, in addition to Dolby
TrueHD and DTS-HD Master Audio
The DVD-A1UDCI includes Dolby Pro Logic IIx and DTS Neo:6 decoding. It also
supports LPCM 192-kHz multi-channel (6-channel) output, one of the audio formats
of Blu-ray discs
(*3)
. These features allows users to enjoy the ultimate in multi-channel
sound quality.
Denon’s video circuitry for high picture quality, to produce a richer video
image from DVD [REALTA]
The DVD-A1UDCI accurately detects moving images at high speed and at the
pixel level of detail for both film and video material, and performs precision calcula-
tions when scaling SD (480i) resolution images of DVD to HD (1080p) resolution or
IP-converting images from interlaced to progressive video.
Digital Noise Reduction, effective for both HD and SD content
The DVD-A1UDCI has a digital noise reduction (DNR) system that uses digital pro-
cessing to remove noise from video signals. This system is effective not only for stan-
dard (SD) video from DVD but also for high-resolution (HD) video from Blu-ray.
- Block noise in a mosaic pattern can be seen in a portion of the image.
- Mosquito noise makes curvatures appear fuzzy.
- Random noise makes the image appear coarse.
Memory
Algorithm A Algorithm B Algorithm C
Arithmetic unit
Arithmetic unit
Arithmetic unit
Output unit
AL32 Bit Extension
Up sampling
Output
Time
PCM Signal input data
Output
Time
Output data
Signal analysis
& detection
control unit
Dynamic Discrete Surround Circuit - HD for DVD-A1UDCI
High bit
audio
decoder
(Decoder) (DSP1)
Digital signal processing
Dynamic Discrete Surround Circuit - HD for DVD-A1UDCI
Bass
management
(DSP2) (FPGA)
Analog audio
XLR Front L
192kHz/32bit DAC
XLR Front R
Front L
Front R
Center
Subwoofer
Surround L
Surround R
Surround Back L
Surround Back R
MIX L/R
8 ch
DAC1
DAC
DAC
DAC2
DAC
DAC
DAC3
DAC
DAC
DAC4
DAC
DAC
DAC5
DAC
DAC
Advanced
AL32
Processing
Multi Channel
AV receiver/amplifierProjectorDVD-A1UDCI
Video + Multi ch audio All Off HDMI 2
Video + Multi ch audioVideo + Multi ch audio
All OffVideo + Multi ch audio
HDMI 1
HDMI 2 output (Audio) HDMI 1 output (Video) DVD-A1UDCI setting
Auto (Dual)
Multi ch audio (w/o Video)
Video
AV Pure Direct
Block diagram of Advanced AL32 Processing
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