Current location - Music Encyclopedia - QQ Music - Technical introduction to Denon power amplifier
Technical introduction to Denon power amplifier

1. All channels of the Denon amplifier A/V amplifier have the same output power and frequency response, ensuring that various high-quality program sources can be played back completely faithfully: from two-channel stereo to advanced DVD-Audio, Super audio CD and 5.1-channel A/V program sources, such as Dolby Digital and DTS. It can also provide 6/7-channel equal power and equal response output for 6.1-channel program sources such as Dolby Digital EX and DTS-ES to ensure the best results. The power supply section of DENON amplifiers and receivers uses large power transformers, large-capacity filter capacitors and other parts optimized for excellent audio characteristics to create a sound that is both thrilling and nuanced.

2. When the PCM digital stereo signal is input to D/A decoding and processing, DENON's latest ultimate analog waveform reproduction technology, namely the Advanced AL24 Processing function, exerts its power in real time. In addition to the original "AL24 Processing Plus" message expansion technology, new DSP and FPGA large-capacity computing processing hardware are added, and based on DENON's exclusively developed (algorithm) digital computing program, new data is inserted into the timeline and upsampling is performed rate, natural interpolation processing without loss of the original signal. In addition, the adaptability of the digital filter is greatly expanded. This advanced AL24 processing circuit will analyze the shape of the input signal and automatically select the most suitable filter curve, corresponding to pulse-free ringing response, pulse-type music signals and percussion. In addition, when "Advanced AL24 Processing" is working, the D/A decoder automatically switches to double differential mode (one is responsible for one channel), which can naturally reproduce the subtle aftertaste of the music, the position of the performer, and the performance. The length, width, height and other spatial conditions of the site. Furthermore, when a Linear PCM (Linear PCM) multi-channel signal is input, DENON's original analog waveform reproduction technology "AL24 Processing Plus" function can work in all channels, making the playback of the multi-channel signal closer to the original sound. .

3. In 1993, DENON disclosed ALPHA processing for the first time. This technology can expand the 16-bit digital signal stored in the CD to a 20-bit sound signal that is close to the original sound.

This marks the beginning of ALPHA's analog waveform reproduction technology in the history of audio. With the emergence of various new digital optical disc media, such as DVD and Super Audio CD, ALPHA processing has further developed. This evolution has progressed from AL24 processing and AL24 PLUS processing to Advanced AL24 processing, which can finally achieve in addition to digital elements ( bit), new data can be inserted on the timeline and the sampling frequency can be increased.

With the advent of Blu-ray discs, DENON developed a more advanced Advanced AL32 process, further expanding the number of bits from 24 to 32, reflecting the ultimate audio performance of Blu-ray discs. Advanced AL32 processing enables more realistic playback of the original sound, providing distortion-free sound details, accurate sound localization, and rich low-frequency playback.

In DVD-A1UD, this newly developed Advanced AL32 processing is applied to the 2-channel balanced audio circuit and the 8-channel audio circuit to form Advanced AL32 multi-channel processing, bringing out this reference-level The true power of Blu-ray players.

4. AL24 Processing is DENON's proprietary analog waveform regeneration technology, and DENON has improved it to support DVD-Audio with a sampling frequency of 192kHz. This new technology, called AL24 Processing Plus, can completely suppress the quantization noise generated when D/A conversion of LPCM signals, making low-level signals clearer and showing all the subtle details in music. In the high-end model, all channels are equipped with AL24 Processing Plus.

5. Auto Setup function

This function can automatically perform the following 6 basic speaker settings: 1. Speaker connection; 2. Speaker size; 3. The sound pressure of the speaker; 4. The distance of the speaker; 5. The phase of the speaker; 6. Low frequency crossover point

6.

Auto Setup function

This function can automatically perform the following six basic speaker settings: 1. Speaker connection; 2. Speaker size; 3. Speaker sound pressure; 4. Speaker distance; 5. Speaker phase; 6. Low frequency Crossover point

Room EQ (room equalizer) function

can automatically correct the frequency characteristics of the listening area of ??the listening room in the listening environment. And has the following 4 frequency response modes to choose from.

Room EQ correction types are divided into the following three modes:

Normal: The overall sound characteristics of the listening room are most appropriately corrected, and each frequency is corrected.

FRONT: The front speakers do not add balance, but only modify other speakers to match it.

FLAT: The frequency response characteristics of each channel speaker are corrected using a flattening method. This mode is suitable for enjoying multi-channel music playback of Dolby Digital, DTS, DVD-Audio and SACD.

7.

Dolby Digital, DTS or other format recordings recorded for cinemas will increase the treble to offset the treble attenuation caused by the sound absorption of the movie screen. But when this kind of recording is played back in a home environment, the treble will appear too strong. DENON's cinema equalizer can correct this problem, making the sound sound clearer and more comfortable. (Applicable to Dolby Digital, Dolby Pro Logic and DTS surround sound modes)

8.

DDSC-Digital is a circuit structure specially designed by DENON. Its surround sound processor adopts It features selected high-performance discrete components, including independent A/D and D/A converters and a sophisticated DSP surround sound processor.

Through the DDSC-Digital circuit, the music signal compressed in the disc can be completely released.

9.

DENON Link is a unique digital balanced transmission interface developed by DENON, which can quickly convert digital audio signals with very little signal loss. In addition, it can also be used with a DENON DVD player equipped with a dedicated DENON Link terminal that uses a single line to achieve high-resolution playback. This interface can also transmit 192kHz/24bit 2-channel digital signals and PCM multi-channel signals of DVD audio discs. When connected to a projector equipped with version 3 of DENON Link, SACD audio content can be completely transmitted.

DVD-A1UD uses the more advanced DENON Link 4th generation. When connected with HDMI to transmit digital audio (such as Blu-ray high-definition audio signal), the player will only use the A/V amplifier to manage the data/ The main clock frequency of the analog converter, the advantage of sharing the same master clock is to minimize the digital time base distortion (jitter) of digital audio transmission. As a result, high-quality sound can be played back while having a more spatial sense. and clearer audio and video. When connected to a DENON A/V amplifier that supports DENON Link 4th generation, users can enjoy the expected superior effects of HD audio.

10.

DLNA and DLNA CERTIFIED are trademarks and/or service marks of Digital Living Network Alliance.

11.

Dolby Digital:

Dolby Digital is a multi-channel digital format developed by Dolby Laboratories.

Dolby Digital includes "5.1" channels, front left, front right, center, surround left, surround right, and an additional channel, which is specially reserved for adding heavy bass sound effects. channel (Low Frequency Sound Effects - LEF - channel, also called 1 channel, including bass frequencies to 120Hz).

Unlike the similar Dolby Logic format, the main channel of Dolby Digital can contain the entire range of sound information, from the lowest bass to the high-frequency treble - 22kHz. The signals of each channel are independent of each other. And allowing treble to be muted, Dolby Digital provides a wide dynamic range, from the most explosive sound effects to the quietest and softest sounds, without noise and distortion.

Dolby Pro Logic II:

Dolby's newly developed Pro Logic II decoder can use any 2-channel program source to produce dynamic 5.1-channel surround sound effects, such as DVD, VHS, TV broadcast, radio broadcast and CD. The matrix encoding/decoding technology of Dolby Pro Logic II is greatly improved compared to the past Pro Logic. For example, Pro Logic II's surround channels are stereo (Pro Logic's surround channels are mono) and full-band (Pro Logic's upper limit is only 7KHz). These improvements allow you to get exciting 5.1-channel surround sound from 2-channel sources.

Dolby Pro Logic IIx:

Dolby Pro Logic IIx is an extension of Dolby Pro Logic II matrix decoding technology. It only uses 2-channel simulation signals, PCM signals or Dolby Digital's two-channel section can produce a 7.1 surround sound (including surround back and center 2-channel) atmosphere. Dolby Pro Logic IIx can also allow 5.1-channel audio sources to be played back in 7.1.

Dolby Pro Logic IIx includes 3 touch modes to correspond to different sources. Music mode is suitable for music playback; Cinema mode is designed for movie playback; Game mode provides video game effect playback. The Game mode can only correspond to the sound source of two-channel programs.

12.

Dolby Digital Plus (Dolby Digital Plus) is an improved Dolby Digital (Dolby Digital) signal format, with a maximum of 7.1 channels of discrete digital sound. Compatible while improving sound quality due to the best data bit rate performance. It is compatible with traditional Dolby Digital, so it has greater flexibility for audio source signals and playback devices.

13.

Since the sound from the headphones enters the ears directly, listening for too long will cause auditory fatigue. Dolby Headphone can simulate the sound effects of speakers placed in front and around the room, making the listener feel as if they are hearing three-dimensional sound in a movie theater. Dolby Headphone works not only with Dolby Digital or Dolby Pro Logic, but also with CDs or other two-channel sources.

14.

Dolby Pro Logic IIz sound effect system, combined with the addition of a pair of Front Height Channels speakers, will elevate home entertainment to another level; this sound effect system supports Stereo, 5.1 and 7.1-channel content, allowing users to experience more in-depth, enveloping and spatial sound effects when enjoying movies, concerts, or video games at home.

15.

Dolby TrueHD (Dolby TrueHD) is a high-quality audio technology developed by Dolby Laboratories that uses distortion-free encoding technology to faithfully reproduce the recording studio sound The sound of the master tape. The format is compatible with a maximum sampling frequency of 96 kHz and a maximum of 7.1 channels, and is therefore used in applications where sound quality is a particular priority.

16.

DTS digital surround is the standard digital format of DTS Company, compatible with 44.1 or 48kHz sampling frequency and 5.1 channel of digital discrete surround sound.

17.

DTS-HD main audio is the distortion-free audio format of DTS Company, which is compatible with up to 96kHz/7.1 channels. Lossless audio encoding technology faithfully reproduces the sound of the studio master tape. The format is fully compatible with legacy products, including legacy DTS digital surround 5.1-channel data.

18.

High fidelity compatible digital (HDCD) is an encoding/decoding technology that can very well reduce the distortion produced during the digital recording process, and is different from the ordinary CD format. Compatible, therefore, extending dynamic range and achieving high resolution.

Automatically identify ordinary CDs and HDCD-compatible CDs to select the best digital processing.

Nineteen.

HDMI is a digital interface standard for next-generation TVs developed based on the DVI (Digital Visual Interface) standard and is optimized for consumer devices. Uncompressed digital video and multi-channel audio signals can be transmitted over a single connection. HDMI is also compatible with HDCP (High-bandwidth Digital Content Protection), a copyright protection technology that encrypts digital video signals in the same way as DVI.

Twenty.

NSV uses digital methods to reduce noise in the video frequency band to improve the linearity of the video signal.

Twenty-one,

THX Ultra certification standards include three major items: sound quality, picture quality and user interface. DVD players that can pass these rigorous tests can ensure the best sound and picture quality.

The AV amplifier/processor contains a THX equalization processing circuit. Any DVD, VCD or VHS software with Dolby or DTS encoding can use this circuit to correct the deviation of the tone balance and spatial characteristics, so that the You can also enjoy accurate sound interpretation in a home theater setting. A THX Ultra-certified AV amplifier can deliver the true effects of a theater in a space of 3,000 cubic feet.

Twenty-two,

AVC-A1SR and AVC-A11SR A/V surround sound amplifiers both support Lucasfillm’s THX Ultra2, which can ensure excellent A/V playback quality and work For reliability, THX Ultra2 is designed for 7.1 playback, and any 5.1 encoded movie or music software can be converted to 7.1 playback using THX Ultra2 mode. In addition to the usual THX mode, both models have THX Ultra2 Cinema (theater) mode and THX Music (music) mode, which can create a special sound field effect to better match the movie or music being played.

Twenty-three,

For the past decade, people have been dreaming of being able to drive low-impedance speakers. Unfortunately, this dream is indeed a difficult proposition. DENON finally realized that a new method must be used to achieve it, which is the UHC single-ended push-pull circuit.

This circuit not only has high output power, but also can fully express the details in music. It is the first advanced solution of its kind that can solve this problem well. The challenge faced by DENON is that the amplifier must have sufficient dynamic strength to transmit the energy emitted by the player completely transparently, and it must also be able to quickly reflect every change in the music signal. The most important thing is that there must be a powerful power supply with sufficient power reserve, and the power amplification part must be able to provide a pure, large dynamic signal to the speaker, so that the sound heard can be absolutely transparent. At the same time, the amplifier is also required to have good transient response characteristics, so that even low-level signals can be accurately amplified. No matter how much dynamic range or frequency response there is, there is no point if the amplifier cannot immediately follow the sudden rise and fall of the sound.

Leakage-free (LC) dual power transformer for wide dynamic range and low noise:

The power transformer adopts a large magnetic circuit and low magnetic flux density design, which has extremely high Good response characteristics, can adapt to music signals with a large dynamic range even in the magnetic saturation area. The leak-free installation method can eliminate mutual interference caused by magnetic fields or other factors, significantly reducing magnetic leakage, thereby eliminating a major source of noise inside the amplifier, making the amplifier a powerful driving source, ensuring very transparent sound and extremely Low noise.

Twenty-four.

Wi-Fi certification ensures interoperability that has been tested and certified by the Wi-Fi Alliance, which verifies the interoperability of wireless LAN devices. team. IEEE 802.11b is a wireless local area network standard set by the 802 working team. It is based on the local area network technology standard established by the IEEE (Institute of Electrical and Electronics Engineers) in the United States. It uses the freely usable 2.4GHz frequency band (ISM band) that does not require radio frequency licensing and can communicate at speeds up to 11 Mbps. 802.11g is another wireless LAN standard set by the 802 working team. It is based on the local area network technology standard established by the IEEE (Institute of Electrical and Electronics Engineers) in the United States and is compatible with IEEE 802.11b. It also uses the 2.4 GHz band, but can communicate at a top speed of 54Mbps.