Jiangxi lianchuang electronics co., LTD. Was established in August 18, 2006, the registered capital of 330 million yuan, is aprofessional research and development, production for the mobile communication and computer,Sets the touch screen, such as optical element key optoelectronic products of sino-foreign joint venture high-tech enterprises.
Panies invest in the construction of "lianchuang audio-visual technology park is located in the coast of the gan river rich big dikewith jingdong avenue interchange, covers an area of 327 mu. Focus on developing mobile touch of form a complete set
Anies adhering to the "joint win-win, innovation, development" spirit of enterprise, strengthening the independent innovation ability,pay attention to technology innovation and management innovation, enhance the enterprise core competition force
Second、Project requirements
Designed and built by DC Acoustic Technology Research co., LTD., the complete sound elimination room is completed and checked within the specified time. After the completion and acceptance of the product, continue to assume the responsibility of quality assurance, warranty, maintenance and technical support. Installation place is in buyer’s factory.
Product content:
1) The construction plan and materials for the complete anechoic chamber installation project shall be designed and installed by Party B. Party B shall apply all or part of its patented technology of “turbocharged micro-cycle variable frequency noise reduction ventilation” to the complete anechoic chamber installation of Party A. The project is under construction;
2) The effective net size of the entire anechoic chamber installation project: 4000mm (L) x 4000mm (W) x 2050mm (H), then the external effective dimensions after fabrication are: 6000mm (L) x 6000mm (W) x 3500mm (H); : +/- 10cm.
3) In the absence of external abnormal interference, the background noise Lgn (A) ≤ 20dB (A); cutoff frequency fc ≤ 100Hz
Third、Acoustic design
1. Sound insulation design to achieve background noise index
2, sound absorption design to achieve the performance of free sound field
3, noise reduction design to achieve aerodynamic performance
Fourth、on-site production and construction
Fifth、On-site measurement and acceptance
Sixth、Test results
1. When working in the production workshop 10m away from the full anechoic chamber, the environmental noise value Len (A) is no more than 60dB (A), and the indoor background noise value Lgn (A) is no more than 12.9db (A).
2. Performance of free sound field: 1/3 frequency band analysis was performed within the frequency range of 100Hz~20KHz. By comparing the spatial attenuation of sound pressure emitted by the testing sound source with the attenuation of the inverse square law of sound pressure with distance in the ideal free sound field, the deviation values were all within the maximum allowable deviation.
The detailed manufacturing process, construction process and acceptance technical specifications of the above complete sound elimination room manufacturing and construction installation can be downloaded to the download center of the company’s official website for free, or please scan the company’s WeChat public service code for free promotion.
