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1.调幅广播的问题调幅广播是具有最久历史的广播方式。在调频广播出现之前,它是主要的大众传播手段。但是自从出现调频广播后,特别是调频立体声广播出现后,人们都为调频立体声广播的高质量节目所吸引,以致中波广播的听众愈来愈少。而调幅广播的质量在现今音响质量中被列入最低等级(见附录)。
1. The issue of AM broadcasting AMR is the oldest broadcast of history. It was the main mass media before FM appeared. However, since the advent of FM radio, especially FM stereo radio, people are attracted to high-quality FM stereo radio programs, resulting in fewer and fewer listeners on the radio. However, the quality of AM broadcasting is listed as the lowest level in today’s audio quality (see appendix).