1. The key points of speaker sound field layout are based on engineering practice, and there are certain rules and principles for the selection and layout of speakers.

1) For centralized and partitioned layouts, speakers that work simultaneously in different locations in the hall are better burned. This can effectively prevent comb filter effects and prevent significant time differences in the sound reaching the listener, resulting in a decrease in effect or even homophonic sounds.

2) When the distance difference between the speaker groups placed in different positions and the listener is greater than 17m, the time difference between the sound waves reaching the listener will exceed 50ms, and when the distance difference increases to 34m, the time difference between the sound waves reaching the listener will be 100ms. Therefore, it is generally believed that when the distance difference exceeds 17m, according to the Hasse effect, a delay device should be considered for compensation, while when the distance difference exceeds 34m, delay processing must be carried out, otherwise echo may occur.

3) In order to ensure the amplification resolution of the sound system, it is generally believed that at the farthest listening point from the speaker, the direct sound should not be lower than the reverberation sound by 12dB. According to this requirement, the farthest distance from the listening area cannot exceed three times the critical distance D of the speaker.

4) To ensure a reasonable direct sound pressure level in the back row that is far away from the speaker, and to ensure good uniformity of the sound pressure level in the field, directional speakers with appropriate coverage angles should be selected. Constant directionality has ideal characteristics and can effectively solve the long-distance constant directionality projection of high-frequency (short wave) sound waves. For medium to high frequencies (medium to short waves, above 500Hz), using speaker arrays and high pitched microphones can generally better control their directionality. Low frequency sound waves, due to their long wavelengths, are difficult to control even when using equipment (usually with wavelengths larger than the size of the equipment), and can only be improved by relying on the low-frequency (long wave) diffusion characteristics in the field and fully utilizing the sound reflection conditions near the low-frequency (long wave) speaker.

5) It should be considered that there should be sufficient distance between the microphone and the speaker, and the directional characteristics of the microphone and the speaker should be utilized to prevent sound feedback and improve sound transmission gain. As the layout of the speaker field for the sound system, its main task is to ensure that there is sufficient sound pressure level, small field unevenness, good language intelligibility, and to avoid multiple echoes as much as possible in the entire sound field. The speaker sound field is equipped with both outdoor and indoor sound systems. The outdoor sound system includes outdoor theaters, parks, squares, stadiums, and other outdoor sound systems. The main purpose of the system design is to improve the sound pressure level of the audience. In principle, speakers with large power capacity should be selected and their input power should be increased, while paying attention to the installation height and distribution of the speakers. The indoor sound release system works in a diffuse sound field. In addition to handling it according to the outdoor sound release method, attention should also be paid to the comprehensive utilization of indoor reverberation, the impact of room gain on the system, and the suppression of acoustic feedback and other acoustic processing methods.