China 'GB/T 12060.9-2011
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 12060.9-2011
Sound system equipment - Part 9: Methods of measurement for artificial reverberation, time delay and frequency shift equipment 声系统设备 第9部分:人工混响、时间延迟和移频装置测量方法
Issued Date:2011-12-30
Implemented Date:2012-05-01
Issued by:
The Standardization Administration of the People's Republic of China