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Technical indicators and power supply requirements
Author:
The sound reinforcement characteristic index of the hall shall be carried out in accordance with the requirements of the national first-level characteristic index. details as follows:
Technical index
The sound reinforcement characteristic index of the hall shall be carried out in accordance with the requirements of the national first-level characteristic index. details as follows:
Level 1 characteristic index requirements:
Maximum sound pressure level: greater than or equal to 110dB;
Transmission frequency characteristics: the average sound pressure level of 100~6300Hz is 0dB, within this range +/- 4dB is allowed, and 50Hz-10000Hz is allowed +4~-8dB;
Sound transmission gain: -8dB, 125Hz～4000Hz;
Sound field unevenness: less than or equal to 8dB, 1000~4000Hz;
Total noise level: less than or equal to 30dB (A).
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