DIN EN 61603-7-2004 采用红外辐射的音频和/或视频及相关信号的传输系统.第7部分:会议和类似设备用数字音频信号
Transmission systems for audio and/or video and related signals using infra-red radiation - Part 7: Digital audio signals for conference and similar applications (IEC 61603-7:2003); German version EN 61603-7:2003
This part of IEC 61603 describes the characteristics of a digital multiple channel, multiple carrier audio transmission system as an extension to conference interpretation or similar systems using the frequency ranges 45 kHz to 1 MHz and 2 MHz to 6 MHz.#,,#