Acoustics design plan for slow shake bar

Slow shake has become the primary place for civic entertainment. For the construction of slow shake, we must give professional consideration to the sound planning of the place.

First, the problem of building sound demand processing:

A set of advanced sound equipment only in a special periodic environment can have excellent performance, the "specific environment" here refers to the outstanding architectural sound environment, which includes the structure, the shape, the volume, the sound absorption data placement, sound absorption, sound insulation structure, etc. The primary objective of measuring the acoustic environment table is: 1) reverberation time, 2) sound field uniformity, 3) static noise.

2. The acoustic characteristics of the slow shake bar and KTV box: the general entertainment venues are divided into two pieces, one is slow shake bar, and the other is KTV box, because its sound equipment is more advanced, the corresponding acoustic environment should be improved accordingly. Through the accounting of most cases, it is found that most of the problems exist in the following areas:

1. Slow shake bar is irregular shape, and more concave arc side wall, so because the sound box is placed in a centralized, very easy to occur sound gathering.

2. Because the function orientation of the slow swing bar is not clear, it brings uncertainties to the sound box placement, and the sound pressure level varies by tens of decibels, which brings difficulties to the acoustic processing in the specific environment table.

3. In view of the sound pressure level of the general entertainment venues (especially Di Hall) widespread, in the 100-120 dB or so, it requires that the building construction is more stable, and the selection of data is more compact, to prevent the occurrence of arch vibration. The spacing and decoration structure of this place can not satisfy this requirement.

4. Sound insulation is notable, because the surrounding slow-shake bar and KTV compartment between the use of lightweight partition wall, its sound insulation is very small, especially low-frequency, generally as long as 30 decibels, this will give slow-shake bar between the surrounding compartments of mutual disturbance, affecting the mood of guests.

5. at the end, I did not know the details of the selection of the finishes in the rooms. Because the sound insulation effect depends not only on the sound insulation of the partition wall, but also on the sound absorption of the outside of the partition wall, it is necessary to select strong sound absorption treatment.

Slow shake the audio equipment.

3. Detailed measures adopted: In view of the above-mentioned characteristics of the site, Yihe sound advocates: it is necessary to take a comprehensive consideration of the acoustic environment, from scratch planning.

1. The reverberation time of the slow shake bar should be set at 0.8-1S, which not only has a high sound clarity, but also has the characteristics of sound pure, thick and mellow.

2. According to the characteristics of the Slow Rocking Bar, the music it broadcasts is generally relieved, the sound pressure level is low, such as the passage of strong singing and dancing, then the music rhythm, sound pressure level will be greatly changed, the placement of speakers (sound axis, positioning) has new requirements, and for performing arts bar, there are different requirements. Therefore, AUST Group advocates that the equipment and control of the system should be treated differently, which is very beneficial to the improvement of sound field uniformity.

3. add some sound diffusers in the hall to prevent part of the sound gathering.

4. Adopt strong sound absorption and insulation treatment to the partition wall of the surrounding compartment of the slow swing bar. Specifically, the existing partition wall should be thickened, the center should be closed to 100 air spaces, filled with sound absorption cotton, depending on the decoration requirements, using cloth or leather sound absorption package.