1、 Function and equipment requirements of home theater
The home theater system is a system that can enjoy movies and music close to the cinema effect built in the home environment. The home theater system allows home users to enjoy movies around the theater, listen to music brought by professional sound, and support karaoke entertainment at home. Generally speaking, a home theater needs three parts: signal source, power amplifier and terminal. Signal sources include: projector, VCD, DVD, Blu ray disc player, personal computer, CD, etc; The terminal includes display equipment (flat panel TV and projector) projection screen and speaker. The speaker itself requires good playback quality; Power amplifier is very important for home theater. Generally, special AV power amplifier is used. AV power amplifier is mainly composed of signal source selector, signal processing preamplifier and rear power amplifier. It can switch the signal source, process the signal, such as Dolby decoding, virtual surround, DSP and adjust the tone volume; Then drive a plurality of speakers through a power amplifier.
The vast majority of friends in apartments will take the living room as the primary choice of home theater, because the area of the family living room is often very large, with large audio-visual space, and it is also convenient to share audio-visual fun with their families. The living room is generally equipped with a large-size wall mounted TV. When considering the function of the living room home theater, the wiring, including the surround line, is also embedded in the early stage. As the living room is a transparent space, the acoustic environment is difficult to achieve the effect of a special audio-visual room. The sound absorption treatment mainly depends on the decoration of sofas, curtains and furniture, and the ground is generally not specially treated. However, from the perspective of professional listening, it can generally achieve good audio-visual effect through simple and effective comprehensive treatment and environmental adjustment.
The configuration of home theater system includes projector, projection screen, digital AV power amplifier, Blu ray DVD, floor mounted main speaker, middle speaker, rear surround speaker and heavy bass speaker to build a 5.1-channel home theater system. Because it is an open space, it is generally not suitable to configure side surround speaker.
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