Best Solar Flood Lights,Solar Motion Flood Lights,Solar Sensor Security Light,Commercial Solar Flood Lights Jiangmen Liangtu Photoelectric Technology Co., Ltd. , https://www.liangtulight.com First, the acoustic design in the studio layout. A studio with a good acoustic environment, the perfect design is not only the processing of several professional rooms, but should create certain acoustic conditions for the use of functions from the beginning of the design. Practice has proved that indoor reverberation is easy to achieve its expected effect, and indoor frequency transmission characteristics and noise control are difficult to achieve due to congenital conditions. For this reason, the layout should first consider:
1. Choose quiet to build the address. However, because small studios are only a small part of the building group, often the address is unconditionally chosen, you have to use the group itself to avoid quiet. Especially in areas with serious noise and vibration pollution, professional houses should be placed in buildings, and office buildings and general technical buildings should be surrounded by the surrounding areas to form a covered building.
2, in order to eliminate the interference of noise, the layout of the small studio. The recording studio and its auxiliary rooms are preferably separated from the building group and are self-contained. If it is placed in a group subject to conditions, it should be placed at the end, bottom or top of the building, which is good for air noise, especially solid sound control.
3. Avoid professional rooms and other adjacent rooms. The outsiders and the internal staff should interfere with each other. The layout should be classified according to the function. The professional rooms are concentrated, relatively independent, and separated by people, forming a quiet broadcasting area within the group.
4. Fans, water pumps, air conditioners and other equipment are all noise sources, and should be placed outside the building. If you enter the building subject to conditions, you should also control it centrally. Professional technology should be kept away from noise sources. In particular, air-conditioning rooms for studio air-conditioning should be laid out. 5. Acoustic design and structure.暧通 closely cooperates and relies on each other, and the layout is conducive to returning the wind.
When noise reduction and noise reduction, the construction node should be beneficial to control solid sound transmission.
Second, the room size and the ratio of the three-way scale are stimulated by sound waves and will have different responses to different frequencies.
The most easily provoked is the normal frequency of the room, which will make the sound of this band stronger, while the other bands will be weakened by the lack of a normal way, causing serious distortion during pickup. In order to evenly distribute the frequency response and the sound field is uniform, the ideal method is to make the studio unplanned. However, small studios are limited by the plane and structure of the whole building. It is difficult to become an irregular body independently. Usually it can only be rectangular. This must correctly control the ratio of room size to three-way scale. Using wave acoustic analysis, the rectangular room's normal frequency is determined by:
f=c/2 (nx/Lx)+(ny/Ly)+(nz/Lz)
Where C is the speed of sound, taking 334M/S; Lx, Ly, LZ is the length, width, and height nx/ny/nz of the room is any positive or zero. The low-frequency distribution uniform condition is Lx, Ly, LZ take the combination level value Lx: Ly: Lz = 1: 1.25: 1.6 or Lx: Ly: Lz = 1: 1.5: 2.5 Some small studios are affected by the height of the floor, the ceiling Lower, sometimes limited by the plane, if the room is too long, you can also choose other scale ratios to get the uniform distribution of the positive frequency of the cylinder. The small studio is difficult to be strictly implemented according to the overall scale. With the following measures, satisfactory results can also be achieved.
1. Change the rectangular plane through the interior decoration of the wall.
2. Arrange the irregular sound absorption structure evenly, and arrange the strong absorption surface and the reflection surface.
3. Through the acoustic decoration adjustment, try to make the three-way scale close to a reasonable ratio, but it must be prevented that the size of any one side is an integer multiple of other sizes, and it is not equal. In order to make the sound field spread and the frequency response is uniform, the small studio volume should not be too small. The volume of the room is approximately determined by the number of indoor air resonance frequencies
N=4V(Fc/C) N: The number of simple modes from the lowest frequency to the Fc range of any frequency. V: Room volume. C: The progress of the sound in the air (344 m / s). When the volume V increases, the normal mode tends to be uniform due to the denseness, and the volume of the small studio scale does not have to be overemphasized after the volume is larger than 710M.
Third, reverberation time and sound absorption structure <br> According to the sound propagation characteristics of the studio and the development of sound pickup technology, in practice, feel "short", "flat", "average" is the studio reverberation time design Three important criteria.
1, "short". The reverberation time is shorter than the same volume, the same function of the studio, the recording studio, and with the use of new recording technology, the general trend is gradually shortened; but it is not the shorter the better, is the small broadcast for language Room, reverberation time should not be less than 0. 30 seconds.
2, "flat". The frequency characteristic curve negates the traditional determination that the past value is the best intermediate frequency reverberation value, while the low frequency rises and the high frequency falls. And ask · `平'. Considering the difference between Chinese and foreign languages, foreign broadcasts often require soft and natural tone, and Chinese requires a high tone. Therefore, on the basis of "flat", high frequency reverberation is required to be slightly longer than the intermediate frequency. To do this, it is actually more difficult. For a small studio, as long as there is a "flat" representation, it can basically achieve its function.
3, "all". The sound quality of the microphone is closely related to the reverberation characteristics of the microphone position, so the studio reverberation sound field is required to be uniform. In this short and uniform reverberation sound field, the recording worker can reasonably arrange the distance of the microphone according to the different conditions such as the drama, the band, etc., and adjust the 'sound energy ratio' to obtain a suitable acoustic environment. Chinahifi.net welcomes the actual average sound absorption coefficient of your small studio is roughly 0.45 ~ 0.5, the sound absorption of each frequency is not much difference, if the floor is laid with chemical fiber carpet, there is a certain suction volume for high frequency, then the other surface average sound absorption Will reach 0.53, which requires a composite structure to obtain a frequency bandwidth, high efficiency of sound absorption. Due to the smooth and flat sky in the TV studio, there are huge air-conditioning equipment on the flat roof and lighting fixtures with a large number of performances. During the broadcast, the scenes, props cameras, surveillance equipment and actors, staff activities will affect Reverberation frequency characteristics. Therefore, although the reverberation design requires consideration of many factors, it is important to first control the low frequency reverberation, and it is necessary to perform sound quality debugging during construction. The guidance room and the voice control room are the nerve centers of the studio, and all the sound sources are controlled and mixed here, so the sound quality design of the control room should be made.
Noise control
Poor noise control is a major problem in small studios. Many studios have very poor sound quality due to noise interference. Some of them have the noise floor of "Weng Weng", car horn sound and impact sound, and some can't even be used. Noise control is an important part of studio acoustic design. The methods and measures for noise control must be determined by the noise environment and control standards, and there is no uniform mode.
(I) Noise Standards From the survey results, the allowable noise level of small studios should not be too low, and too low is actually not needed. Due to working conditions and equipment, equipment level restrictions, when the room is working normally, actors and staff walking will emit noise and light. The camera will also have higher noise, and its integrated value is generally 35 to 40 dB (A), so the noise of the small studio is 35 to 40 dBA, and the range is suitable. If it is represented by the noise evaluation curve NR, it is equivalent to taking the NR30 to 35 curve.
Practice has proved that there is a moderate amount of background noise for small studios, as long as it is continuous. Uniform, without audible information on the sounds of the language and music, will also help to mask the noise from the camera and the air conditioning system.
(II) Control of air noise Control air noise is mainly realized by the enclosure structure and the sound insulation door and window.
1. The envelope structure should be determined according to the outdoor environmental noise value.
Because the entrance and exit of the studio is large, it is convenient to open and close, the noise is low; and the scenery is carried, the props also need a larger door, so it is not easy to do well. Considering the limitations of construction accuracy and the lack of special hardware components, the construction of the acoustic door should be as simple as possible. Many complicated structures, such as multi-layer zigzag shovel, overlapping seals are in vain to increase production troubles, not worth the candle. In recent years, the following measures have been taken mainly in China, and the sound insulation problem of the door has been solved practically.
(1) Composite sound insulation treatment with double door and door bucket. Strong suction in the door to form a "sound gate" to effectively improve the sound insulation.
(2) The door joint is made into a simple oblique opening, and the two sides are covered with industrial felt. Even if there is a slit at the time of closing, it forms a “muffling pipe†itself. In order to improve the "sound elimination" ability, the thickness of the door leaf should be increased as much as possible, generally not less than 10CM. The fixed observation window is easier to handle than the door. According to the problems in our province, the following points should be noted in the design.
1. In order to avoid the resonance effect between the double glazing and the overlap of the anastomosis effect, the double glazing should be non-parallel to each other, and the thickness of the glass should not be the same, and 5 and 10, or 5 and 6 mm combinations can be selected.
2. The effective inter-air layer between the two glass is generally not less than 7CM. The sound-absorbing material is placed around the double-layer frame, and the moisture-absorbing agent should be placed in the frame to avoid the occurrence of mildew on the glass.
3. Do a good job of gap treatment between glass and window sash, window frame and wall. The glass is sealed with rubber strips or glass glue. The contact between the window and the brick wall is embedded with asphalt and linen. To achieve the above points, the average sound insulation of double-layer wooden windows can reach 45dB, which fully meets the requirements of small studios.
(2) Control of solid sound transmission The operation of machinery and equipment installed in the building group, or the impact of walls and floors, will cause the building structure, especially the vibration of the floor. Vibration waves are transmitted around walls, beams, columns, plates, etc., because the attenuation of sound waves propagating in solids is very small, resulting in serious noise interference to the studio. Control of solid sound transmission, except in the overall arrangement. When considering the layout in a comprehensive manner, measures must be taken from the construction and structure of the building to meet the requirements. In the overall layout, it is the most effective way to place the noise and vibration sources outside the group and to control them centrally. For small studios with severe elastic wave interference, floating floor and elastic suspended solid top are used. The floating raft is built on the structural layer. The thickness of the floating concrete slab is at least 7.5cm. In order to obtain better sound insulation, it is necessary to avoid any rigid connection between the floating slab and the surrounding wall. During construction, the elastic felt or glass wool board under the floating raft shall be waterproof. When pouring concrete slabs with a floor area of ​​more than 12 to 14 m2, expansion joints and laying steel bars shall be provided at appropriate intervals. Chinahifi.net welcomes you to build floating slabs, which have many structural forms and different sound insulation effects. Acoustic design should be based on different environments and calculated with different floating structures. If pipes and conductors pass through the floating slab, they should be isolated from the slab around them to avoid structural slabs from communicating with the floating slab. The realization of the acoustic function of the studio is the result of close cooperation between the building acoustics, structure, and HVAC. Each major must coordinate the design and rely on each other under the unified acoustic index requirements, and establish corresponding systems in design management. The development of architecture today is the combination of architectural technology and art, and the unification of architectural science and aesthetics. The development of science and technology will put forward higher requirements for the acoustic function of the studio, and the application of science and technology in architecture will certainly design a higher level studio.