Pointing characteristics of speaker system

The sound of the loudspeaker is usually in the low frequency range (below 200Hz). The sound is transmitted in different directions, but in high frequency range, the sound is transmitted in a strong direction, which is used in the system design.

    Pointing to the characteristics of the speaker to the sound pressure level away from the axis with the angle increases and the sound pressure level decreases gradually, while the sound pressure level increased with the increase of the propagation distance and sound wave according to the inverse square of the distance from the speaker and attenuation, distance and range of different audience area, if these two attenuation can make the right choices, two the attenuation compensate each other, so that the sound field is more uniform, large projects need to cover relatively wide area, the only sound is usually not enough, need to be more than just speakers together group (Chen Lie), speaker Chen Lie in loudspeaker system, constant directivity can make the acoustic speakers between the high frequency interference, not in the box, with a pair of speakers with the directional characteristics of composition of eight shaped display, double, can cover a single speaker or speaker, sound in front have each other Phase interference, which seriously affects the uniformity of sound field and the clarity of sound.