GB/T 4854.7-2008 Acoustics – Reference zero for the calibration of audiometric equipment – Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions

Standard Number: GB/T 4854.7-2008
Chinese:声学 校准测听设备的基准零级 第7部分: 自由场与扩散场测听的基准听阈
English:Acoustics – Reference zero for the calibration of audiometric equipment – Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions

Effective Date:2009-02-01
Regulatory Authority:Chinese Academy of Sciences
Issuing Regulatory Authority:General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China,National Standardization Administration of China

Adheres to international standards:Y
PDF Downloadable:N

You can click the button below to purchase the PDF version, and we will send it to you via email.

Click below to buy the printed version. Shipped via FedEx within 7 days. Full refund if out of stock.

If you encounter the following issues, please click here to contact us, and we will do our best to assist you.
1. You cannot find the standard document you are looking for on our website.
2. You have found the standard document, but our page indicates that PDF download is not available.
3. You need to purchase our translated version.