What Is Home Theater Automation?

The home theater system is the realistic combination of the digital technology and the analog audio technology in today's home. You can taste Xiangling and listen to wonderful music in various programs such as CD, LD (video disc), VCD (small video disc), DVD (digital video disc), VCR (video recording), BS (satellite reception) and other You can enjoy karaoke at a show, enjoy Dolby directional logic surround cinema effects, enjoy the cowboy style on the vast North American grassland, enjoy the gorgeous style of the Alps winter ski resort, and experience the thrilling shooting battle scene . .... All these are the supreme enjoyment of home theater.

Home theater sound system

The home theater system is the realistic combination of the digital technology and the analog audio technology in today's home. You can taste Xiangling and listen to wonderful music in a variety of programs such as CD, LD (video disc), VCD (small video disc), DVD (digital video disc), VCR (video recording), BS (satellite reception) and other programs. You can enjoy karaoke at a show, enjoy Dolby directional logic surround cinema effects, enjoy the cowboy style on the vast North American grassland, enjoy the gorgeous style of the Alps winter ski resort, and experience the thrilling shooting battle scene . .... All these are the supreme enjoyment of home theater.

Chinese name

Home theater sound system

component

Signal source, amplifier and terminal

Classification

Generally speaking, a home theater needs 3 parts: signal source, power amplifier and terminal.

The signal source includes VCD, DVD, Blu-ray Disc player, personal computer, CD, etc .; the terminal includes display equipment (flat-screen TV and projector) and speakers. The amplifier is very important for home theater. Generally, a special AV amplifier is used. AV amplifiers are mainly It consists of a signal source selector, a signal processing pre-amplifier, and a post-stage power amplifier. You can switch the signal source and adjust the tone volume for signal processing, such as Dolby decoding, virtual surround, DSP, etc .; and finally drive multiple Speakers.

The home theater audio system is mainly composed of amplifiers and speakers.

CD

The mainstream of audio decoding is digital surround sound format with DVD and even HTPC as the core. The latest system also supports THX SURROUND EX and dts es decoded by Dolby Digital EX 6.1, and multi-channel digital audio DVD-Audio and SACD. As for multi-channel The playback system is technically the same, the difference is mainly in the grade. Moreover, as a system, the sound is composed of various equipment. When we purchase, we must not only consider the whole, but also consider each component:

Speaker

The speaker is the terminal for audio playback and the most overlooked part of a home theater system. A good speaker involves the disciplines of acoustics, electromagnetics, mechanics, materials, etc., and is the key to affecting the audio playback effect. It's not just six wooden boards and a few speakers that can be called a speaker.

In the X.1 AV speaker system, the subwoofer is the most important. The subwoofer can enhance the bass effect, and the most powerful subwoofer can perform the bass below 100Hz.

In addition, ideal home theater speakers, in addition to the subwoofer, it is best to strive for consistency in each channel-the main speakers on the left and right sides have the highest requirements for sound quality reproduction, and the center speakers and surround speakers on the rear can be smaller than the main speakers. But it must match the tone of the main speaker.

Good diffusion speakers are more practical, you should listen more and compare more during the purchase process. It should also be noted that most speakers do not take into account both dynamic and detailed sound quality. Speakers suitable for music appreciation are often more delicate and less dynamic; multi-channel AV speakers specially designed for home theater are often bland. . If both are taken into account, it is sky-high. So you have to find the one that suits you best. Consumers with no listening experience are better off using the same brand.

In addition, there are many devices on the market that can virtualize the surround sound effect through two speakers, but this virtual surround sound is different from the surround sound reproduced by multiple speakers, so you want to feel the cinematic effect full of dynamic and surround sound. , 5.1 speaker system is already the lowest configuration.

AV amplifier

AV amplifier is the center of audio playback, which is characterized by multi-channel sound playback. When it comes to multi-channel playback, the standard of surround sound is inseparable. The current popular surround sound standards are: 1. Dolby prologic surround sound. 2. Dolby Digital surround sound. 3. DTS surround sound. 4. THX Surround EX surround sound (7.1-channel). 5. DTS-ES Discrete surround sound (6.1 channels). A home AV amplifier must have at least the Dolby Digital surround sound decoding and playback function, because Dolby Digital is the mandatory sound standard for PAL video discs specified by the DVD Alliance in December 1997. It is the user's responsibility whether the AV amplifier has this function. Selected points. But other mainstream sound effects are best.

In addition, it is recommended to choose a combined AV amplifier with a built-in decoder. The factors that need to be considered during selection are the sound quality and color of the amplifier. Because the sound is subjective and varies from person to person, it is best to connect the speaker to the amplifier for actual audition.

Audio source

The mainstream video and audio media that can provide 5.1 surround sound are DVD, EVD, Blu-ray DVD, HTPC, mainstream game consoles and even MP4. For music appreciation, in addition to CD, the sound quality specifications of other audio sources are beyond CD, and support for multi-channel, can become the standard audio source architecture, comprehensive consideration when choosing the type of audio and video source.

At this stage, DVD players are still the most suitable as home theater audio and video sources. In addition, Blu-ray DVD players with large capacity, high definition and perfect sound quality (including PS3 game consoles using Blu-ray DVD, etc.), HTPC or true SD / A high-definition digital TV system is also a good choice.