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　　The system will evenly cover the entire conference room through multi-point sound reinforcement, and the system adopts digital processing and control. The system consists of a main sound reinforcement system and an auxiliary sound reinforcement system. The system should meet various types of sound reinforcement needs, with good acoustics and excellent speech intelligibility. The acoustic characteristics of the sound reinforcement system are defined as comprehensive sound reinforcement. Level 1 standard:

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　　Maximum sound pressure level (steady state in empty field): average sound pressure level in the range of 0.125 ~ 4.0KHz ≥ 95dB

　　Transmission frequency characteristics: 0.063 ~ 8.0kHz, the average sound pressure level of 0.125 ~ 4.0kHz is 0dB, +4 ~ -12dB is allowed, and ≤±4dB is allowed within 0.125 ~ 4.0kHz.

　　Sound transmission gain (dB): 0.125 ~ 4.0kHz average value ≥ -8dB

　　Sound field unevenness (0dB): 1.0/4.0kHz≤8dB

　　The sound reinforcement system must achieve uniform sound field distribution, clear voice, and no feedback noise.

　　The key to the design of the sound reinforcement system lies in the selection of the speaker layout and the electro-acoustic processing. The speaker selection and layout design is like the engine of a car. It is the basis for determining the performance of the sound reinforcement system. Design is like the computer control unit of a car, which is the key to determining how well a sound reinforcement system works.

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