Dolby Atmos surround sound

                                                          Dolby Atmos surround sound 

In the design and planning of the home theater, the speaker of the theater is an important part of the entire audio-visual room. There are different types and sizes of home theater speakers. According to the functions of the speakers in the theater system, they can be divided into: front speakers, center speakers, surround speakers, sky speakers, and subwoofers, so today I will chat with you, different speakers in the home theater system What kind of role does it play in it.

This article takes the popular 7.1.4 Dolby Atmos audio-visual room on the market as an example to talk about how each link plays a role.

First of all, there are three speakers in the front three channels of the theater, which are the left front speaker, the center speaker, and the right front speaker. Next are four surround speakers, which are arranged on the left and right sides of the home theater system and the back wall of the audio-visual room. It is the subwoofer. In the past, such a theater system was called a 7.1 theater system. With the development of audio-visual technology, until now, the 4 behind 7.1.4 represents the 4 sky above the starry sky in the audio-visual room. Speakers, the more popular term at present, is the origin of Dolby Atmos 7.1.4.

We can also understand it this way, the first number is the number of speakers at the height of our ears, the second number 1 represents the number of subwoofers, and the third number 4 represents the number of sky speakers. The number of channels, on the one hand, depends on the space, room type, and size of the audio-visual room, and on the other hand, it also depends on the personal budget for the audio-visual room.

Let's talk about the left front and right front speakers first.

The left and right front speakers are mainly placed on the left and right sides of the video output device. Generally, there are floor-standing speakers, bookshelf-mounted, wall-mounted, or in-wall speakers (if the video device is a projection screen and sound-transmitting screen, it is usually placed behind ), what type of speakers to choose depends on the interior design style of the audio-visual room and personal preferences.

The main speaker is responsible for managing the sound of most scenes in the film, and the restoration of the corresponding large scene sound effects, including the background music soundtrack in the film, especially the magnificent scene with a large-scale soundtrack, which is exciting and has a deep bass effect It will be very shocking.

At the same time, the main speaker has the function of sound effect positioning. For example, sound effects from left to right, such as cars driving, planes passing through, and bullets firing, also require the cooperation of the main speaker and surround speakers to reflect the sense of orientation in the film.

2 center speakers

In a home theater system, the center speaker is a relatively important sound source and an indispensable part. Its main function is to replay the vocal dialogue in the movie and the sound segment of the mid-frequency and high-frequency part. It will concentrate the vocal dialogue part of the theater in the middle of the entire screen sound field, which is the key to the effect and smoothness of the human voice. Sexuality.

The center speaker is generally placed in the middle of the two pairs of main speakers at the back of the movie viewing interface, directly facing the auditorium. The purpose is to make the sound point consistent with the mouth shape of the protagonist on the screen. In this way, the sound will not produce time difference and dislocation. The design structure of the center speaker is usually relatively fixed, and generally adopts the design of two symmetrical basses and one treble in the middle. Seventy to eighty percent of the content in the pure theater is played back by the center speaker. It can be said that a center speaker can watch the whole movie, so the center speaker is an indispensable part of the home theater system.

3 surround speakers

The surround speaker is an unknown worker in the whole home theater system. The main function of the surround speaker is to accurately locate the sound in the picture in the audio system. The position where the sound appears is the corresponding surround speaker. The amplified sound part is also what we usually call sound-picture synchronization. Only when the home theater system achieves sound-picture synchronization can it create a sense of presence and atmosphere. Enhance the texture of the sound effect of the film, and can show natural and real cohesion and smoothness when the sound image moves.

Surround sound is used in the entire family system, it can play a link between the past and the future. It needs to make the front sound field have a good link, and at the same time let us hear an ambient sound effect at the rear, allowing us to blend into the sound field surrounded by.

Of course, if the budget is sufficient, you can choose dipole surround sound, which can use the reflection of the wall of the audio-visual room to create a better diffused sound field, thereby improving the sound field envelopment of the audio-visual room, thereby better improving the viewing of movies and TV. Effect.

4 sky speakers

The sky speaker is an essential part of our Dolby Atmos home theater system. Its main function is to restore the aircraft hovering in the sky, thunder and rain, and any sound in the sky is done through it. Yes, usually we will choose the coaxial 8-inch speaker unit, the middle, high and bass are all together, so it can restore the sound more realistically.

5 subwoofers

The subwoofer is the soul of the home theater. All the magnificent scenes in the film need the subwoofer to set off the sound. In the movie soundtrack, the ability of the subwoofer is concentrated around 60 Hz, and many movies are as low as 40 Hz. A sound pressure level can reach more than 100 DB, which can be said to be deafening. With a subwoofer, the sound of explosions and mountains shaking in the movie can be more real and shocking.

The above is the role of each speaker in the Dolby Atmos 7.1.4-channel home theater system in the entire theater system. Of course, a standard-accepted audio-visual room not only needs good audio equipment, but also needs to be considered If you want to build your own professional private home audio-visual room, if you want to build your own professional private home audio-visual room, if you have a sufficient budget, I still recommend finding a professional audio-visual company to plan.