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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功率放大器的選擇

Selection of a V power amplifier

顧名思義A(audio)表示音頻、音響，V（video）表示音頻、圖像，因此A V功放是匯集了音頻和視 頻兩種信號處理的視聽放大器，強調(diào)的是聲場的氛圍，專門用于家庭影院，其主要由信號源選擇器、信號處理前置放大器和后級功率放大器組成，可以切換信號源，對信號處理，通過功率放大器驅(qū)動多個音箱，一般具有前置、中置、環(huán)繞等47個聲道功率的輸出，帶有杜比定向邏輯環(huán)繞解 碼 器或AC-3解 碼 器、DSP數(shù)碼聲場處理、調(diào)頻/調(diào)幅數(shù)字調(diào)諧收音功能，并且還應具有多種音視 頻輸入輸出接口，如同軸、光纖、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.

如何選擇A V功率放大器

How to choose a V power amplifier

A V功放是音頻重放的核心，其作用是多聲道的聲音重放功能。談到多聲道的重放就離不開環(huán)繞聲的標準。在選擇功放的時候一定要注意功放是否具備現(xiàn)在流行的環(huán)繞聲標準認證：

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、杜比定向邏輯(Dolbyprologic)環(huán)繞聲。

1. Dolby logic surround sound.

2、杜比數(shù)碼(DolbyDigital)環(huán)繞聲。

2. Dolby digital surround sound.

3、DTS環(huán)繞聲。

3. DTS surround sound.

4、THXSurroundEX環(huán)繞聲(7.1聲道)。

4. Thxsurroundex surround sound (7.1 channels).

5、DTS-ESDiscrete環(huán)繞聲(6.1聲道)等。

5. DTS esdiscrete surround sound (6.1 channel), etc.

一臺家用A V功放少要擁有杜比數(shù)碼環(huán)繞聲的解 碼重放功能，因為杜比數(shù)碼是DVD聯(lián)盟在1997年12月規(guī)定的PAL制影碟的強制伴音標準，A V功放是否擁有這一功能是用戶選擇的基本點。其他的認證是該功放級別的直接體現(xiàn)。

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.