DTMF
....\.classpath
....\.project
....\.settings
....\.........\org.eclipse.jdt.core.prefs
....\bin
....\...\DTMF_Decode.class
....\...\DTMF_Demo.class
....\JMathStudio.jar
....\src
....\...\DTMF_Decode.java
....\...\DTMF_Demo.java