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Second Harmincs in speech signal

Started by manoj garg July 23, 2002
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



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 >