目前世界各国所用的立体声和双伴音电视广播制式有两种,即调频-调频制和双伴音载频制.采用双伴音制主要是适应有些国家经常使用两种以上的民族语言,并可在收看图象的同时收听到立体声伴音.下面介绍日本目前采用的调频-调频制电视立体声和双伴音广播的基本原理和接收方法. At present, there are two stereo and dual audio television broadcast systems used in various countries all over the world, that is, FM-FM system and double-sound carrier system. The double-sound system is mainly adapted to some countries often use more than two kinds of national languages ​​and can watch Image while listening to stereo sound. Here’s the current Japanese FM - FM TV stereophonic and double-sound broadcast basic principles and methods of reception.