Sound system equipment-Methods for specifying and measuring the characteristics of artificial reverberation, time delay and frequency shift equipment
音响系统设备 人工混响、延时和移频设备特性的规定和测量方法

1987-11-30

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
Sound system equipment - Part 9: Methods of measurement for artificial reverberation, time delay and frequency shift equipment

2011-12-30

Sound system equipment. Part 9: Artificial reverberation, time delay and frequency shift equipment
声音系统设备 - 第9部分:人造混响 时间延迟和频移设备

1977-01-01

单频网授时接收设备技术要求和测量方法
Technical requirements and measurement methods of receiving equipments for time service in single frequency network

2017-11-01