refer to Vishwanathan, Telecommunications and switching network, for the details --- manoj garg <> wrote: > Hello friends, > > I wanted to know that what is the ratio of second > harmonic energy to the fundamental frequency energy > in > the speech signal. Actually i am implementing a DTMF > detector and to discriminate the DTMF signal from > the > speech i have to put this check. > > thanking you, > manoj > |