When the speaker makes a sound in a room, the listener can hear the sound directly from the speaker. This is the direct sound field, but you can also hear the sound reflected from the wall, ceiling and floor. This is called the reflected sound field. The more the direct sound field is heard by the audience, the smaller the sound of the reflected sound field is, the better the sound is, because the sound of the direct sound field is controllable, but the sound of the reflected sound field is uncontrollable, only the sound from the direct sound field will be rendered and the clarity of the original sound will be reduced. Therefore, the listener who is closer to the speaker will feel a better sound, and the audience sitting behind is likely to be the sound field they hear is louder than the sound of the direct sound field, and the sound effect will be poorer and the clarity will be reduced.
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