摘要
双音多频 ( DTMF)信号在数字通信及其它方面有着广泛的应用 ,文章介绍了 DTMF信号的发生 ,并集中讨论了对该信号的解码。 DTMF信号的解码检测 ,可以采用硬件 ,比如电话控制的专用 ASIC,或者微控制器加上解码电路 ;也可以采用基于不同硬件的软件实现 ,关键是信号解码的可靠性和实时性。
Dual Tone Multiple Frequency (DTMF) signal has been widely used in digital communication and other areas Generation of DTMF signal is described, and the signal detection is discussed It could be detected by hardware such as ASIC for telephone control and MCU with decoding circuits,or by software based on various algorithms, while the key problem is the real time detection Several schemes and their implementations are examined in particular
出处
《微电子学》
CAS
CSCD
北大核心
2001年第6期418-421,共4页
Microelectronics
关键词
信号处理
双音多频信号
解码
数字通信
DTMF signal
Discrete Fourier transformation
Signal processing
Filter
