Acoustic characteristics of sound reinforcement system in dance hall

According to the functional requirements of the hall, it is mainly used for singing and dancing parties, karaoke singing, small-scale acting, dancing, music appreciation and other recreational activities. Therefore, the acoustic characteristics of the sound reinforcement system are guided by the "acoustic characteristics and measurement methods of the sound reinforcement system of the hall" in accordance with the civilized professional standards of the People's Republic of China WH0301-93. The first-level acoustic characteristics of the sound reinforcement system is planned, taking into account the requirements of the second-level acoustic characteristics of the disco hall sound reinforcement system for maximum sound pressure levels of 125-4000Hz greater than or equal to 103dB.

The first-class guidelines for the acoustic characteristics of the sound amplification system of the Chinese Civilized Occupational Standard WH0301-93 ballroom are listed in the following table:

Acoustic characteristics


Grade


Maximum sound pressure level (dB)

Transmission frequency characteristic

Sound gain

sound field normniformity


Total noise level dB "A".


Distortion degree

Class A

100~6300Hz > 103dB

The 40~12500Hz is 80~8000Hz with a uniform sound pressure level of 0dB, allowing +4~-8dB, and the content of 80~8000Hz is 4dB.


The uniform sound pressure level of 125~4000Hz is more than -6dB.


100Hz < < 10dB

1000Hz < < 8dB

63000Hz less than 8dB

Thirty-five

5%

Level two (Cara OK hall 1).

125~4000Hz > 98dB

The 63~8000Hz is 125~4000Hz with a uniform sound pressure level of 0dB, allowing +4~-10dB, and the content of 125~4000Hz is less than +4dB.



The average value of 125~4000Hz is more than -6dB.



1000Hz < < 8dB

4000Hz < < 8dB

Forty

10%

Two Cara OK Hall (Cara OK suite).

250~4000Hz > 93dB

The 100~6300Hz is 250~4000Hz with a uniform sound pressure level of 0dB, allowing +4~-10dB, and the content of 250~4000Hz is less than +4~-6dB.


The average value of 250~4000Hz is more than -10dB.


1000Hz less than 12dB

4000Hz less than 12dB

Cara OK room is not checked.

Forty

13%

Note: the level of dance floor of a level dance hall is separated from the seats.
The two or three level music and dance hall, except for noise, is only tested on the dance floor.

The above acoustic characteristics are measured in accordance with the standard WH0301-93 "Acoustic characteristics and measurement methods of the sound amplification system in the ballroom".