广东晟辉科技股份有限公司创立于 2015 年，是一家集研发、制造、销售和服务于一体的国家高新技术企业，占地面积达 40000㎡，拥有员工 1000 余人，年产能可达 1.2 亿台。公司产品广泛服务于汽车、工业、消费和医疗等多个领域，销售网络遍布全球，长期为国内外知名品牌提供优质的散热解决方案。 

Guangdong Shenghui Technology Co., Ltd. was founded in 2015. It is a national high-tech enterprise integrating R & D, manufacturing, sales and service. It covers an area of 40,000 square meters, has more than 1,000 employees, and its annual production capacity can reach 120 million units. The products of the company are widely used in various fields such as automotive, industrial, consumer, and medical. Its sales network spreads globally, and it has long provided high-quality heat dissipation solutions for well-known domestic and foreign brands.

广州丹品人工环境技术有限公司是由一批国内外多年从事各类声学技术研究、具有丰富理论和实践经验的声学专家和专业工程师团队组成，拥有自己的写字楼和工厂，工厂内建有符合CNAS标准的声学实验室，可以监控自己产品的声学技术指标及对外进行声学测试服务。通过丹品团队的艰苦奋斗和持续不断的创新与发展，其设计、生产、安装的声学实验室具有技术指标精准、绿色环保、质量耐用、外观漂亮、科技含量高的产品。

Guangzhou Danpin Anechoic T&E Co., Ltd. is composed of a team of acoustic experts and professional engineers at home and abroad who have been engaged in various acoustic technology research for many years and have rich theoretical and practical experience. The company owns its own office building and factory. An acoustic laboratory meeting CNAS standards is built in the factory, which can monitor the acoustic technical indicators of its own products and provide acoustic testing services to the outside. Through the arduous efforts, continuous innovation and development of the Danpin team, the acoustic laboratories designed, produced, and installed by the company have products with accurate technical indicators, environmental friendliness, durability, beautiful appearance, and high technological content.

半消声室不仅是声学测试的一个特殊实验室，而且是测试系统的重要组成部分，实际上它也是声学测试设备之一，其声学性能指标直接影响测试的精度。具体声学设计、制造施工安装及现场实测验收简单介绍等后续资料请留意浏览本公司的官方网站中的工程案例，或扫描本公司微信公众服务号二维码得到免费推送，详细资料则请到本公司的官方网站中的下载中心免费下载。

The semi - anechoic chamber is not only a special laboratory for acoustic testing but also an important part of the testing system. In fact, it is also one of the acoustic testing equipment, and its acoustic performance indicators directly affect the accuracy of the test. For specific acoustic design, manufacturing, construction, installation, and on - site measurement and acceptance introduction and other follow - up materials, please pay attention to the engineering cases on the official website of our company, or scan the QR code of the WeChat official service account of our company to get free push. For detailed materials, please go to the download center on the official website of our company for free download. 

关键词：消音室、消声室、静音室、混响室、半消音室、半消声室、全消音室、全消声室、声学测量仪器、振动测量仪器； 

Keywords: soundproof room, anechoic chamber, silent room, reverberation chamber, semi-soundproof room, semi-anechoic chamber, full-soundproof room, full-anechoic chamber, acoustic measuring instrument, vibration measuring instrument;

一、采购内容

I. Purchase Content

（1）精密级半消声室

（1）Precision-level semi-anechoic chamber

二、依据标准

II. Basis Standards

（1）GB/T 6882《声学 噪声源声功率级的测定消声室和全消声室精密法》

（1）GB/T 6882 "Acoustics - Determination of sound power levels of noise sources - Precision methods for anechoic and hemi - anechoic rooms"

（2）ISO 3745《声学-噪声源声功率级的测定-消声室和全消声室的精密测定法》

（2）ISO 3745 "Acoustics - Determination of sound power levels of noise sources - Precision methods for anechoic and hemi - anechoic rooms"

三、主要指标及项目内容

III. Main Indicators and Project Content

1、半消声室室内本底噪声值Lgn(A)≤18dB（A）

The background noise value Lgn(A) in the semi - anechoic chamber ≤ 18dB(A)

2、截止频率Fc≤100Hz

Cut-off frequency: Fc≤100Hz

（半消声室案例效果图）

(Semi - anechoic case renderings)

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