Denon AVC-A1HD Specifications download pdf (Page 7)

06 07

Advanced AL32 Processing Multi Channel, to further improve proprietary

technology that optimises HD audio performance, used for the first time

in the DVD-A1UD

In 1993, Denon unveiled ALPHA 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 ALPHA Processing’s history

of original waveform reproduction technology.

ALPHA 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, accu-

rate sound localization, and rich low range, Advanced AL32 Processing is able to

reproduce the original sound with greater fidelity.

In the DVD-A1UD, 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 bal-

anced 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-A1UD 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 amplifier. 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-A1UD 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-A1UD 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-A1UD has a digital noise reduction (DNR) system that uses digital

processing to remove noise from video signals. This system is effective not

only for standard (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.

1080/24p output, for maximum enhancement of film texture

The DVD-A1UD is equipped with 1080/24p HDMI output functions to faithfully

reproduce the realistic video images recorded on Blu-ray discs. When connected

to a display supporting 1080/24p, users can enjoy Blu-ray video performance to its

maximum effect with the texture of motion picture film. It is also possible to enjoy

DVD at 1080/24p quality, giving the same motion picture texture to video images

from DVD.

Denon Pixel Image Correction (D.P.I.C.), for more natural curvature

correction

The DVD-A1UD’s D.P.I.C. feature is an original Denon video enhancement

technology for correcting high-definition images. This technology uses 10-bit

processing to further improve detection and precision in the curvature cor-

rection of images. A new algorithm is used to sample and analyse a total of

9 pixels in the image data during enhancement that considers the effects of

peripheral pixels around the target pixel. This enables very detailed detection

and processing of the image at the pixel level in the vertical, horizontal, and

diagonal direction. Image correction is possible not only for standard images

from DVD but also high-definition images from Blu-ray discs.

Memory

Algorithm A Algorithm B Algorithm C

Arithmetic unit

Output unit

AL32 Bit Extension

Up sampling

Output

Time

PCM Signal input data

Output

Time

Output data

Signal analysis

& detection

control unit

AV receiver/ampliﬁerProjectorDVD-A1UD

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-A1UD setting

Auto (Dual)

Multi ch audio (w/o Video)

Video

AV Pure Direct

1 2 3 4 5 6 7 8 9 10 11 12 ... 27 28

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Denon AVC-A1HD Specifications Page 7

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