Denon AVR 1707 - AV Receiver User Manual download pdf (Page 4)

Denon technology

DENON Link: Connected via a shielded twisted pair (STP) RJ-45 fitted cable to a

DENON Link-compliant A/V amplifier, the balanced signal transfer offers lower voltage

than coaxial or unbalanced cables. Since DENON Link is far less susceptible to

radiated noise, it ensures the highest level of signal transfer. The DENON Link inter-

face is able to transfer high-grade LPCM 24-bit, 192-kHz, 2-channel and 96-kHz, 24-bit,

multi-channel digital output.

Advanced AL24 Processing: Denon led the world in developing a practical PCM

recorder in 1972. The shift to digital technology solved numerous problems such as

noise, wow, flutter, and frequency response. The delicate nuances of sound from CD up

to the least significant bit (LSB) are lost, however, due to the 16-bit quantisation and

band cutting at fs/2 (half the sampling frequency) during 44.1-kHz sampling. Denon was

determined to tackle the problem of quantisation noise that remained in digital audio, and

developed ALPHA (adaptive line pattern harmonised algorithm), a technology that

reproduced 16-bit data with 20-bit quality and became a favourite with audiophiles

around the world.

This development later progressed to 24-bit quality with the evolution of "AL24

Processing," and as support for higher resolutions and sampling continued to improve,

Denon developed "AL24 Processing Plus" for the 192-kHz sampling of DVD-Audio.

Denon's most recent achievement is "Advanced AL24 Processing," a proprietary high-

speed signal processing technology that expands the volume of data along the time axis

in addition to the data expansion of existing AL24 Processing Plus technology.

AL24 Processing Plus: Denon has further developed its proprietary AL24

Processing, an analog waveform reproduction technology, to support the 192-kHz sam-

pling frequency of DVD-Audio. This new technology, called AL24 Processing Plus,

thoroughly suppresses quantisation noise associated with D/A conversion of LPCM sig-

nals to reproduce the low-level signals with optimum clarity that brings out all the delicate

nuances of the music. In high-end models, AL24 Processing Plus works for all channels.

LAMBDA SLC: The LAMBDA Super Linear Converter (SLC) design includes a LSI,

developed by Denon, that divides the digital data into two streams to eliminate zero-cross

distortion in a powerful DAC configuration. In the two data streams, there is no reversal

of the MSB, and the combined waveform also shows no zero-cross distortion. Even if

there is distortion in the original information for a certain bit, the two signals are averaged,

reducing the distortion by one half. On the other hand, if the signal level is larger than the

amount of shift, the waveform will pass through the usual, unbiased zero-cross point and

any distortions in the signal will then be reliably eliminated by the MSB compensation fea-

ture of the SLC.

DDSC-Digital, for high-quality sound reproduction: DDSC (Dynamic Discrete

Surround Circuit)-Digital is a circuit configuration specially designed by Denon in which all

elements of the surround processor are optimised through the use of selected high-per-

formance discrete components, including separate A/D and D/A converters, with sophis-

ticated DSP surround decoding.

All channel equal circuit: Denon's A/V amplifiers and receivers are endowed with

power amplifiers that deliver equal power and response to all channels, ensuring utter

fidelity to a wide range of high-quality sound sources, from 2-channel stereo to advanced

DVD-Audio, Super Audio CD, and Multi channel A/V sources such as Dolby Digital EX

and DTS-ES. This all-channel equal circuit gives you the same quality sound in any for-

mat and in all channels.

The power sections of Denon's A/V amplifiers and receivers use large transformers, high-

capacity block capacitors, and other parts specially selected for their high-quality sonic

characteristics to give you a robust yet wonderfully detailed sound.

Pure audio construction: A/V components contain analog audio, digital audio, video,

control and many other circuits. The various circuits and blocks in Denon’s A/V amplifiers

and receivers are thus separated and shielded to prevent mutual interference among

them. High-end models are designed with the power supply section in the centre and the

power amp section on both sides as in a Hi-Fi amplifier.

Pure direct mode:

Pure direct mode allows listeners to enjoy pure music of remarkably

high quality. When Pure Direct is selected, power to the video circuitry and the fluores-

cent display is automatically turned off. During analog sound input, power to the digital

circuitry is also turned off, and adverse influences by other circuits on the audio circuit-

ry are suppressed to the maximum extent possible.

Rigid vibration-resistant chassis for high-precision playback: As in pure audio

components, A/V receivers must also be thoroughly protected against the adverse influences

of both internal and external vibrations. Denon products are built with a sophisticated vibra-

tion-resistant chassis that effectively eliminates these adverse influences on sound quality.

Supports next generation high resolution formats: Future system upgrade capa-

bility is provided with the Denon's A/V receivers 6/8 Channel External Input feature. For next

generation high resolution multi-channel audio formats such as DVD-Audio and Super

Audio CD, the 6/8 Channel External Input is equipped with a wide band frequency response

extending to 100 kHz. In addition, the digital inputs support high resolution 24 bit, 96 kHz

stereo PCM soundtracks, available on selected audiophile DVD music releases.

Cinema equaliser: The sound from movie sources recorded in Dolby Digital, DTS or

other formats emphasises correction of components that deteriorate in the high-frequen-

cy range due to the movie screen. If this sound is reproduced in the home theater with-

out correction, the high-frequency range is too strong. The Cinema Equaliser is a func-

tion to correct these high-frequency components so that the sound is clearer and easier

to listen to. (For Dolby Digital, Dolby Pro Logic, and DTS surround modes)

Denon technology

Memory

Algorithm A Algorithm B Algorithm C

Arithm

etic unit

Arithm

etic unit

rithm

etic unit

Output unit

Output

Time

Sample group import

Input data

Output

Time

Output data

Signal analysis

& detection

control unit

1 2 3 4 5 6 7 8 9 ... 44 45

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