用java 写的模拟离散时间DTMF Applet-Using java to write the simulation of discrete-time DTMF Applet

VoiceXML is a markup language for creating voice-user interfaces. It uses speech recognition and/or touchtone (DTMF keypad) for input, and pre-recorded audio and text-to-speech synthesis (TTS) for output. It is based on the Worldwide Web Consortium s