Before only the announcer's voice could be heard across the radio channel. When the microphone gets passed around, many voices can be heard over the air.
「打電話就讓聽眾得到立即的滿足」，張襄玉說。於是以往只有主持人會發出聲音的廣播頻道，麥克風轉來轉去，不同聲音也出來了。