期刊名称：International Journal of Signal Processing, Image Processing and Pattern Recognition
印刷版ISSN：2005-4254
出版年度：2014
卷号：7
期号：2
页码：69-74
DOI：10.14257/ijsip.2014.7.2.07
出版社：SERSC
摘要：Based on microcontroller, an audio source switcher which can be used for medium wave transmitter is proposed in this paper. According to the default priority, the proposed switcher can correctly realize the function of switch among other signal channels when the current audio source is in transmission fault. In order to improve the stability and practical value, the switcher can correctly distinguish the statuses of speech pause and transmission fault according to default time. Moreover, the trap filter is also used in switcher to inhabit the high frequency interference of transmitting station. It is expected that this switcher has potential application in future.
关键词：Signal Source Switch; Microcontroller; Medium Wave Transmitter
