The Generation and Detection of DTMF Signals
Zhao Wang Xia · 2001
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