人们口中常说的家庭影院系统的播放系统主要由三大部分组成，分别为音视 频播放器、A V放大器、音箱系统。三者缺少了任何一部也不能称为家庭影院的播放系统。而我们今天要介绍的家庭影院音响系统只是家庭影院的一部分，其主要是由功率放大器及音箱系统组成的但在安装指南中我们会组建一套完整的家庭影院系统给大家。
It is often said that the play system of home theater system is mainly composed of three parts: audio and video player, AV Amplifier and speaker system. None of them can be called home theater. The home theater audio system we are going to introduce today is only a part of the home theater, which is mainly composed of power amplifier and speaker system. However, in the installation guide, we will set up a complete home theater system for you.
A V功率放大器的选择
Selection of a V power amplifier
顾名思义A(audio)表示音频、音响，V（video）表示音频、图像，因此A V功放是汇集了音频和视 频两种信号处理的视听放大器，强调的是声场的氛围，专门用于家庭影院，其主要由信号源选择器、信号处理前置放大器和后级功率放大器组成，可以切换信号源，对信号处理，通过功率放大器驱动多个音箱，一般具有前置、中置、环绕等47个声道功率的输出，带有杜比定向逻辑环绕解 码 器或AC-3解 码 器、DSP数码声场处理、调频/调幅数字调谐收音功能，并且还应具有多种音视 频输入输出接口，如同轴、光纤、HDMI接口等。
As the name suggests, a (audio) stands for audio and sound, and V (video) stands for audio and image. Therefore, a V power amplifier is an audio-visual amplifier that integrates audio and video signal processing, emphasizing the atmosphere of sound field. It is specially used in home theater. It is mainly composed of signal source selector, signal processing preamplifier and post stage power amplifier, which can switch signal sources, For signal processing, multiple loudspeakers are driven by power amplifiers, which generally have 4-7 channel power outputs such as front, middle, surround, etc., with Dolby directional logic surround decoder or AC-3 decoder, DSP digital sound field processing, FM / AM digital tuning radio functions, and multiple audio and video input and output interfaces, such as axis, optical fiber, HDMI interface, etc.
如何选择A V功率放大器
How to choose a V power amplifier
A V功放是音频重放的核心，其作用是多声道的声音重放功能。谈到多声道的重放就离不开环绕声的标准。在选择功放的时候一定要注意功放是否具备现在流行的环绕声标准认证：
AV power amplifier is the core of audio playback, whose function is multi-channel sound playback. When it comes to multichannel playback, it is inseparable from the standard of surround sound. When choosing the power amplifier, we must pay attention to whether the power amplifier has the current popular surround sound standard certification
1、杜比定向逻辑(顿辞濒产测辫谤辞濒辞驳颈肠)环绕声。
1. Dolby logic surround sound.
2、杜比数码(顿辞濒产测顿颈驳颈迟补濒)环绕声。
2. Dolby digital surround sound.
3、顿罢厂环绕声。
3. DTS surround sound.
4、罢贬齿厂耻谤谤辞耻苍诲贰齿环绕声(7.1声道)。
4. Thxsurroundex surround sound (7.1 channels).
5、顿罢厂-贰厂顿颈蝉肠谤别迟别环绕声(6.1声道)等。
5. DTS esdiscrete surround sound (6.1 channel), etc.
一台家用A V功放少要拥有杜比数码环绕声的解 码重放功能，因为杜比数码是DVD联盟在1997年12月规定的PAL制影碟的强制伴音标准，A V功放是否拥有这一功能是用户选择的基本点。其他的认证是该功放级别的直接体现。
A home AV power amplifier should at least have the decoding and replaying function of Dolby digital surround sound, because Dolby Digital is the mandatory audio standard for PAL video disc stipulated by DVD alliance in December 1997. Whether or not the AV power amplifier has this function is the basic point for users to choose. Other certification is the direct embodiment of the power amplifier level.
