On the sound effect of the sound box of the multimedia conference system

   In the multimedia conference room or home theater, in addition to the indoor acoustic environment of a certain impact on the sound field, the sound box is particularly important. In the premise of good indoor acoustic environment, the more accurate the sound image is, the more vivid the sound is, the more vivid and lifelike sound image can be displayed. Below, we discuss three front (left, middle and right) speakers in order to put the method, surround sound box, as well as the ultra bass sound box.

    1.Put the center channel speaker

    The front speakers are generally placed in the center of the screen image as close as possible. Most speakers of the language sound effects, in order to ensure the dialogue accurately positioning in the center of the screen and the sound clear, it should be used specifically for mid channel design of individual speakers. The central channel speakers use horizontal horizontal box, the best place is the top of the TV set (if you use the front projection screen, then put it in the back of the screen), that should be close to the screen.

    2.Left and right channel main speakers placed

    The two speakers placed in a certain relationship with the center channel speaker position. In order to ensure the sound like the left and right moving stationarity. They are placed on both sides of the mid channel speaker, and the speaker should position and screen the best listen to maintain an equal distance. Generally speaking, built-in speaker setup should than left and right two speakers back some distance, until both sound field can completely together together to create a truly unified sound image localization. In addition, the vertical height of the left and right channel speaker with it / tweeter axis below the center speaker 0.3m is appropriate, otherwise the height of the left, middle and right three speakers difference is too large, in front of the sound as in the lateral displacement of the will to sound like the feeling of jumping. Usually landing sound box to meet the above requirements. If the use of a bookshelf type speaker for the left and right sound box, then they should be fixed on the sound box bracket, so that it is highly consistent with the above requirements.

    Left and right channel speakers left the screen size of the screen. If the use of large and medium sized screens in the small room, the left and right channel speakers can be close to the side of the screen. If the screen is small, they can make them a little far away from the screen to obtain a wider three-dimensional sound field. To sum up, the sound of the three channels of the left, middle and right direction is more important than the diffusion, i.e., the radiation angle range of these three channels should be based on the best listening position. So can reduce the impact of the reflection from the floor, wall and roof, appropriate to ensure that the sound image positioning.

    3.Surround sound track speakers

    Surround sound box to put an audio and visual sound environment (room situation) and the type of link box. Around the left and right around the two channel sound box, the sound of the spread should be more than the direction, so favorable to create a strong atmosphere of the atmosphere. When the dipole type speakers are placed, two factors should be considered: resonance and self - failure. The best one is anti resonance from the ceiling (or floor) at the height of the indoor space 20%. In order to make the frequency response more smooth, a new device called, which is called a low frequency, can be added to the low frequency response.

    For direct radiation type ring sound box, can be considered a lot of layout scheme. As fixed on both sides of the wall and make them toward the rear corner; fixed on the rear wall, making them outward and upward was open, herringbone and toward the side wall and the ceiling with; put on both sides on the wall of the floor, and to point to the joints of walls and ceilings, and so on. Also according to the room to design a number of other options. Home theater surround sound field is mainly rely on the sound reflection and refraction of the sound reflection and refraction of the surround sound box, and the different rooms of indoor acoustic conditions vary widely, as long as the patient test, careful comparison, it will be able to find the best place to put the program.

    4.Super bass sound box

    Usually the ultra bass sound box is placed in front of the corner of the wall, the best away from the corner 1m above, such can reduce the interference of the standing wave. Also the super bass sound box is placed in the best position to listen to both sides, to maintain a proper distance, because the ear is not sensitive to the direction of the ultra bass on both sides of the bass, so this time the super bass will not interfere with the original sound image of the front three.