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调幅波段的数字声音广播——简称数字AM,是近年来广播电视领域传输数字化的热门话题之一。本刊从本期起将连续发表数字AM技术系列报告。本期先刊出李栋教授撰写的(数字AM概论),作为系列报告的开篇。以后将分别详细介绍国际上提出的各种数字AM系统的工作原理、特点、开发和试验情况。
Amplitude-modulated band digital sound broadcasting - referred to as digital AM, is one of the hot topics in the field of digital broadcasting in recent years. This issue will be published consecutively from this issue of digital AM technology series report. This issue first published by Professor Li Dong (Digital AM Introduction), as the beginning of a series of reports. In the future, the working principle, characteristics, development and test of various digital AM systems put forward in the world will be introduced in detail.