Thuật ngữ kỹ thuật của Denon

Hỗ Trợ Kĩ Thuật

Thuật ngữ kỹ thuật của Denon

10-ch Equal Power

Ampli AV và Receiver của Denon cung cấp công suất âm tần và đáp tuyến tần số đều cho tất cả các kênh, bảo đảm tái tạo âm thanh với độ trung thực cao của tất cả các nguồn âm thanh chất lượng cao có dãi tần rộng, từ 2 kênh stereo cho đến các nguồn được hoà âm kỹ thuật cao như DVD-A , SACD. Với mạch điện được thiết kế đồng đều cho tất cả các kênh sẽ mang lại cho chúng ta một chất lượng âm thanh xuất sắc giống nhau dưới bất kỳ định dạng nào trên tất cả các kênh.

Tất cả, các mạch điện trong ampli Receiver của Denon đều được cung cấp một nguồn điện mạnh mẽ, sạch nhờ vào biến áp nguồn lớn, tụ lọc chuyên dụng do Denon đặt hàng chuyên Audio và biến áp có 7 ngõ ra thứ cấp, đảm bảo âm thanh mạnh mẽ nhưng thật chi tiết.

Advanced AL24 processing
The ultimate analog waveform reproduction technology developed by DENON, for use during PCM signal input (during stereo signal processing). In addition to the data expansion of existing AL24 Processing Plus technology, up-converted sampling is used to achieve natural interpolation without losing original data. Greater optimisation in digital processing algorithm has also been achieved for ringing-free pulse response and for pulsive music data and attack sounds. This enhances naturalness in the reproduction of spatial information such as the delicate nuances
in the music, the locations of the performers, and the breadth, height, and depth of the concert hall.

AL 24 Processing

AL 24 Processing has inherited the technology of the original ALPHA Processing that was used in DENON's highly-successful S1 series of reference-class audio components. AL 24 Processing further reduces quantization distortion and represents the ultimate analog waveform reproduction technology designed to support the higher numbers of bits and higher samplings of next-generation media.

AL 24 Processing senses the nature of the digital data being input and interpolates the data so that it approaches the analog waveform it should be if the sound existed in the natural world. AL 24 Processing supports not only 16-bit digital data but also 18-, 20- and 24-bit data, as well as input data with a sampling frequency of 96 kHz.

AL 24 Processing Plus

DENON has further developed its proprietary AL24 Processing, an analog waveform reproduction technology, to support the 192-kHz sampling frequency of DVD-Audio. This new technology, called AL24 Processing Plus, thoroughly suppresses quantization noise associated with D/A conversion of LPCM signals 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.

Auto set up

Auto Set-up
Auto Set-up performs the following basic settings for the speakers: Speaker connection, speaker size, speaker level, speaker distance, speaker phase, and crossover frequency.

Auto setup / room EQ

1. Auto Set-up
Auto Set-up performs the following basic settings for the speakers: Speaker connection, speaker size, speaker level, speaker distance, speaker phase, and crossover frequency.

2. Room EQ
Room EQ automatically performs ideal correctionsfor the frequency characteristics of the speaker
system and the room. Three patterns of equalizer curves (Normal, Front, and Flat) are calculated in a single measurement, and there is also an option that allows the user to store one pattern of manually equalized settings in memory. Since these four patterns stored in memory can be assigned for each surround mode, it is possible to easily set an ideal listening environment that matches the source being played.

Cinema EQ

The sound from movie source recorded in Dolby Digital , DTS or other formats emphasizes correction of components that deteriorate in the high –frequency range due to the movie screen . If this sound is reproduced in the home theater without correction , the high-frequency range is too strong . The cinema Equalizer is a function to correct these high-frequency components so that the sound is clearer and easier to listen to .

DDSC Digital

DDSC-Digital is a circuit configuration specially designed by DENON in which all the elements of the surround processor are optimized by the use of selected high performance discrete elements, including separate A/D and D/A conversion, with sophisticated DSP surround decoding.

DENON Link

DENON Link

High-grade LPCM 24-bit/96-kHz for 6-channel or 24-bit/192-kHz for 2-channel digital input is possible when the AVC-A1SR is connected via a shielded twisted pair (STP) cable to a Denon DVD player that supports Denon Link. Since Denon Link uses low-voltage differential signaling (LVDS), transfer capabilities of greater than 1.2 Gbps at a differential voltage of approximately 0.3 Vpp are possible.

DENON LINK has just been upgraded to the 3rd edition. The new edition now allows the input of Super Audio CD digital signals as well as DVD-Video/Audio.To transfer audio signals, DENON has developed a unique digital transmission technology, known as DENON LINK. This digitally balanced transfer technology permits jitter-less data transfer and low noise. The AVC-A1SRA and AVR-3805 incorporates this latest digital audio interface, so the enduser will experience absolute finest in audio playback between AVC-A1SRA and AVR-3805 and DENON LINK featured DVD player.

Dolby B NR

B-type NR is the original Dolby system designed for consumer tape recording. More than 30 years after its introduction, it is still included in all but the least expensive cassette recorders and players, and is used in the preparation of almost all prerecorded cassettes.

Dolby Digital

Dolby Digital is a revolutionary step up the path to realistic sound in the home. It delivers six totally separate (discrete) channels of sound. Like Dolby Surround Pro Logic, it includes Left, Center and Right channels across the front of the room. Dolby Surround Pro Logic provides a single limited-bandwidth (100 Hz to 7,000 Hz) Surround channel which is typically played back in the home through two channels of amplification and two speakers. In comparison, Dolby Digital provides separate (discrete) Left Surround and Right Surround channels, for more precise localization of sounds and a more convincing, realistic ambiance. And, with Dolby Digital, all five main channels are full range (3 Hz to 20,000 Hz). A subwoofer could be added to each channel, if desired. The sixth channel, the Low Frequency Effects Channel, will, at times, contain additional bass information to maximize the impact of scenes such as explosions, crashes, etc.

All six channels in a Dolby Digital system are digital, which means that they can be transferred without loss from the producer's mixing console to your home playback system.

Amazingly, Dolby Digital packs all six channels into less space than a single channel on a Compact Disc requiem. This advanced approach to coding digital audio data is what makes it possible for Dolby Digital soundtracks to be added to conventional laser discs, and to a whole host of other sources.

These technologies give you a dramatic improvement in extremely wide dynamic and frequency range, with low-distortion reproduction in your home.

Dolby Digital EX Pro Logic II

Dolby Digital

Dolby Digital is a revolutionary step up the path to realistic sound in the home. It delivers six totally separate (discrete) channels of sound. Like Dolby Surround Pro Logic, it includes Left, Center and Right channels across the front of the room. Dolby Surround Pro Logic provides a single limited-bandwidth (100 Hz to 7,000 Hz) Surround channel which is typically played back in the home through two channels of amplification and two speakers. In comparison, Dolby Digital provides separate (discrete) Left Surround and Right Surround channels, for more precise localization of sounds and a more convincing, realistic ambiance. And, with Dolby Digital, all five main channels are full range (3 Hz to 20,000 Hz). A subwoofer could be added to each channel, if desired. The sixth channel, the Low Frequency Effects Channel, will, at times, contain additional bass information to maximize the impact of scenes such as explosions, crashes, etc.

All six channels in a Dolby Digital system are digital, which means that they can be transferred without loss from the producer's mixing console to your home playback system.

Amazingly, Dolby Digital packs all six channels into less space than a single channel on a Compact Disc requiem. This advanced approach to coding digital audio data is what makes it possible for Dolby Digital soundtracks to be added to conventional laser discs, and to a whole host of other sources.

These technologies give you a dramatic improvement in extremely wide dynamic and frequency range, with low-distortion reproduction in your home.

Dolby Digital EX

Dolby Digital EX is a 6.1- channel surround format proposed by Dolby Laboratories that allows users to enjoy in their homes the "DOLBY DIGITAL SURROUND EX" audio format jointly developed by Dolby Laboratories and Lucas Films and first used for the movie "Star Wars Episode 1- Phantom Menace" .
The 6.1 –Channels of sound , including surround back channels , provide sound positioning and expression of space .
Dolby Surround

Dolby Surround is the consumer version of the original analog Dolby multichannel film sound format. When a Dolby Surround soundtrack is produced, four channels of audio information—left, center, right, and surround—are matrix-encoded onto two audio tracks. These two tracks are then carried on stereo program sources such as videotapes and TV broadcasts into the home, where they can be decoded to recreate the original four channels and the surround sound experience. Thousands of feature films on home video, as well as many television shows, are encoded in Dolby Surround.

Dolby Surround Pro Logic II

Dolby Surround Pro Logic II is an improved matrix decoding technology that provides better spatiality and directionality on Dolby Surround program material; provides a convincing three-dimensional soundfield on conventional stereo music recordings; and is ideally suited to bring the surround experience to automotive sound. While conventional surround programming is fully compatible with Dolby Surround Pro Logic II decoders, soundtracks will be able to be encoded specifically to take full advantage of Pro Logic II playback, including separate left and right surround channels. (Such material is also compatible with conventional Pro Logic decoders.)

Dolby Headphone

This is a three-dimensional sound technology developed jointly by Dolby Laboratories and Lake Technology Ltd. of Australia for achieving surround sound using regular headphones.

Previously, when using headphones all the sounds resonated inside the head and it was uncomfortable to listen over headphones for long periods of time. Dolby Headphone simulates speaker playback in a room and places the sound at the front or the sides, outside the head, to achieve a powerful sound like the sound of movie or home theaters. This technology is mainly for multichannel audio/video equipment with Dolby Digital or Dolby Pro Logic Surround decoding functions and works with a high performance digital signal processing (DSP) chip.

Dolby Headphone is effective not only for multichannel sources but also for stereo programs.

On the AVC-A1SRA , it is possible to output signals encoded in the Dolby Headphone mode from the recording output terminal and record them on a separate recorder.

Dolby Surround

Dolby Surround is the consumer version of the original analog Dolby multichannel film sound format. When a Dolby Surround soundtrack is produced, four channels of audio information—left, center, right, and surround—are matrix-encoded onto two audio tracks. These two tracks are then carried on stereo program sources such as videotapes and TV broadcasts into the home, where they can be decoded to recreate the original four channels and the surround sound experience. Thousands of feature films on home video, as well as many television shows, are encoded in Dolby Surround.

DTS 96/24

The sampling frequency, number of bits and number of channels used for recording of music, etc., in studios has been increasing in recent years, and there are a growing number of high quality signal sources, including 96 kHz/24 bit 5.1-channel sources.

For example, there are high picture/sound quality DVD video sources with 96 kHz/24 bit stereo PCM audio tracks. However, because the data rate for these audio tracks is extremely high, there are limits to recording them on two channels only, and since the quality of the pictures must be restricted it is common to only include still pictures.

In addition, 96 kHz/24 bit 5.1-channel surround is possible with DVD audio sources, but DVD audio players are required to play them with this high quality.

DTS 96/24 is a multi-channel digital signal format developed by Digital Theater Systems Inc. in order to deal with this situation.

Conventional surround formats used sampling frequencies of 48 or 44.1 kHz, so 20 kHz was about the maximum playback signal frequency. With DTS 96/24, the sampling frequency is increased to 96 or 88.2 kHz to achieve a wide frequency range of over 40 kHz.

In addition, DTS 96/24 has a resolution of 24 bits, resulting in the same frequency band and dynamic range as 96 kHz/24 bit PCM.

As with conventional DTS Surround, DTS 96/24 is compatible with a maximum of 5.1 channels, so sources recorded using DTS 96/24 can be played in high sampling frequency, multiple channel audio with such normal media as DVD videos and CDs. Thus, with DTS 96/24, the same 96 kHz/24 bit multi-channel surround sound as with DVD-Audio can be achieved while viewing DVD-Video images on a conventional DVD-Video player ( 1). Furthermore, with DTS 96/24 compatible CDs, 88.2 kHz/24 bit multi-channel surround can be achieved using normal CD/LD players ( 1).

Even with the high quality multi-channel signals, the recording time is the same as with conventional DTS surround sources.

What's more, DTS 96/24 is fully compatible with the conventional DTS surround format, so DTS 96/24 signal sources can be played with a sampling frequency of 48 kHz or 44.1 kHz on conventional DTS or DTS-ES surround decoders ( 2).

1 A DVD player with DTS digital output capabilities (for CD/LD players, a player with digital outputs for conventional DTS CDs/LDs) and a disc recorded in DTS 96/24 are required.

2 The resolution is 24 or 20 bits, depending on the decoder.

DTS 96/24, ES, NEO:6

DTS 96/24

High-quality 96-kHz, 24-bit (96/24) sound playback from ordinary DVD-Video recordings is limited to only two channels and there are also limitations on the picture. DVD-Video recorded in DTS 96/24, however, allows high-quality 5.1-channel sound playback in full-quality, full-motion video. DTS 96/24 lets you enjoy both digital output and video output from your existing DVD player.

DTS-ES Extended Surround

DTS-ES Extended Surround is a new multi-channel digital signal format developed by Digital Theater Systems Inc. While offering high compatibility with the conventional DTS Digital Surround format, DTS-ES Extended Surround greatly improves the 360-degree surround impression and space expression thanks to further expanded surround signals. This format has been used professionally in movie theaters since 1999. In addition to the 5.1 surround channels (FL, FR, C, SL, SR and LFE), DTS-ES Extended Surround also offers the SB (Surround Back, sometimes also referred to as "surround center") channel for surround playback with a total of 6.1 channels. DTS-ES Extended Surround includes two signal formats with different surround signal recording methods, as described below.

DTS-ES Discrete 6.1

DTS-ES Discrete 6.1 is the newest recording format. With it, all 6.1 channels (including the SB channel) are recorded independently using a digital discrete system. The main feature of this format is that because the SL, SR and SB channels are fully independent, the sound can be designed with total freedom and it is possible to achieve a sense that the acoustic images are moving about freely among the background sounds surrounding the listener from 360 degrees. Though maximum performance is achieved when sound tracks recorded with this system are played using a DTS-ES decoder, when played with a conventional DTS decoder the SB channel signals are automatically down-mixed to the SL and SR channels, so none of the signal components are lost.

DTS-ES Matrix 6.1

With this format, the additional SB channel signals undergo matrix encoding and are input to the SL and SR channels beforehand. Upon playback they are decoded to the SL, SR and SB channels. The performance of the encoder used at the time of recording can be fully matched using a high precision digital matrix decoder developed by DTS, thereby achieving surround sound more faithful to the producer's sound design aims than with conventional 5.1- or 6.1-channel systems.

In addition, the bit stream format is 100% compatible with conventional DTS signals, so the effect of the Matrix 6.1 format can be achieved even with 5.1-channel signal sources. Of course it is also possible to play DTS-ES Matrix 6.1 encoded sources with a DTS 5.1-channel decoder.
When DTS-ES Discrete 6.1 or Matrix 6.1 encoded sources are decoded with a DTS-ES decoder, the format is automatically detected upon decoding and the optimum playing mode is selected. However, some Matrix 6.1 sources may be detected as having a 5.1-channel format, so the DTS-ES Matrix 6.1 mode must be set manually to play these sources.
(For instructions on selecting the surround mode, see page 46.)
The DTS-ES decoder includes another function, the DTS Neo:6 surround mode for 6.1-channel playback of digital PCM and analog signal sources.

DTS Neo:6 surround

This mode applies conventional 2-channel signals to the high precision digital matrix decoder used for DTS-ES Matrix 6.1 to achieve 6.1-channel surround playback. High precision input signal detection and matrix processing enable full band reproduction (frequency response of 20 Hz to 20 kHz or greater) for all 6.1 channels, and separation between the different channels is improved to the same level as that of a digital discrete system.
DTS Neo:6 surround includes two modes for selecting the optimum decoding for the signal source.

DTS Neo:6 Cinema

This mode is optimum for playing movies. Decoding is performed with emphasis on separation performance to achieve the same atmosphere with 2-channel sources as with 6.1-channel sources.

This mode is effective for playing sources recorded in conventional surround formats as well, because the in-phase component is assigned mainly to the center channel (C) and the reversed phase component to the surround (SL, SR and SB channels).

DTS Neo:6 Music

This mode is suited mainly for playing music. The front channel (FL and FR) signals bypass the decoder and are played directly so there is no loss of sound quality, and the effect of the surround signals output from the center (C) and surround (SL, SR and SB) channels add a natural sense of expansion to the sound field.

DTS-ES

DTS-ES Extended Surround is a new multi-channel digital signal format developed by Digital Theater Systems Inc. While offering high compatibility with the conventional DTS Digital Surround format, DTS-ES Extended Surround greatly improves the 360-degree surround impression and space expression thanks to further expanded surround signals. This format has been used professionally in movie theaters since 1999. In addition to the 5.1 surround channels (FL, FR, C, SL, SR and LFE), DTS-ES Extended Surround also offers the SB (Surround Back, sometimes also referred to as "surround center") channel for surround playback with a total of 6.1 channels. DTS-ES Extended Surround includes two signal formats with different surround signal recording methods, as described below.

DTS-ES Discrete 6.1

DTS-ES Discrete 6.1 is the newest recording format. With it, all 6.1 channels (including the SB channel) are recorded independently using a digital discrete system. The main feature of this format is that because the SL, SR and SB channels are fully independent, the sound can be designed with total freedom and it is possible to achieve a sense that the acoustic images are moving about freely among the background sounds surrounding the listener from 360 degrees. Though maximum performance is achieved when sound tracks recorded with this system are played using a DTS-ES decoder, when played with a conventional DTS decoder the SB channel signals are automatically down-mixed to the SL and SR channels, so none of the signal components are lost.

DTS-ES Matrix 6.1

With this format, the additional SB channel signals undergo matrix encoding and are input to the SL and SR channels beforehand. Upon playback they are decoded to the SL, SR and SB channels. The performance of the encoder used at the time of recording can be fully matched using a high precision digital matrix decoder developed by DTS, thereby achieving surround sound more faithful to the producer's sound design aims than with conventional 5.1- or 6.1-channel systems.
In addition, the bit stream format is 100% compatible with conventional DTS signals, so the effect of the Matrix 6.1 format can be achieved even with 5.1-channel signal sources. Of course it is also possible to play DTS-ES Matrix 6.1 encoded sources with a DTS 5.1-channel decoder.

HDCD

HDCD is an encoding/decoding technology that greatly reduces the distortion that occurs upon digital recording while maintaining compatibility with the conventional CD format, thus expanding the dynamic range and achieving a high resolution.

Conventional CDs and HDCD compatible CDs are identified automatically to select the optimum digital processing

PureProgressive

The DVD-A1 and DVD-3800's interlace to progressive converter are the new SiI504 Converter with PureProgressiveTM circuitry from Silicon Image. The SiI504 features faster moving picture detection and improved film/video mode recognition capability.

High-speed processing: This Sil504 Progressive Converter is capable of processing 6 billion operations per second, providing the finest in motion-adaptive de-interlacing.

Moving picture detection: PureProgressiveTM features 2:3 pulldown detection, which converts 24-fps Film based material to 60-fps TV/Video playback, while also detecting Video based material, animation and graphics. PureProgressiveTM is capable of reproducing DVD-Video discs containing both Film and Video material, as well as high picture quality progressive video sources, while avoiding the flickering caused by detection delays of these different formats. In processing moving video signals, a conventional progressive converter performs detection on a full frame-by-frame basis, while PureProgressiveTM stores 4 fields of video signals in a 64-Mbit SDRAM buffer, enabling the detection and processing on a pixel-by-pixel basis to achieve greater precision in discriminating between moving and still pictures.

Improved 2:3 pulldown detection: There are cases in which 2:3 pulldown data signals on DVD-Video discs are not in sync.

The PureProgressiveTM converter will quickly detect the non-sequential points and perform appropriate corrective measures at high speed to minimize picture flickering.

It is now also possible to select Level Detection or Flag Detection as the detection method used for Film and Video material. If an incorrect flag was recorded or the difference between the video level and noise level is very small and distinctions on the disc are difficult to detect, this selection ensures optimum detection capability and minimizes picture quality degradation.

THX Ultra

Before any home theatre component can be THX Ultra certified, it must incorporate all the features above and also pass a rigorous series of quality and performance tests. Only then can a product feature the THX Ultra logo, which is your guarantee that the Home Theatre products you purchase will give you superb performance for many years to come. THX Ultra requirements cover every aspect of the product including power amplifier performance, preamplifier performance and operation, as well as hundreds of other parameters in both the digital and analog domain.

THX Ultra2

THX Ultra2 The THX Ultra2 logo certifies that it satisfies the newest certification standards of Lucasfilm Ltd., governing performance, features, sound quality, power, stability into low-impedance speaker loads, and ease of operation. The THX Ultra2 Cinema mode and THX MusicMode, in addition to the other THX cinema modes, let you enjoy the particular soundfield effects that match the movie or music source you are playing.