Envelope of burst of sine waveform

[Meenatchi]

Hi,

I want to get only the envelope of the burst of sine wave as attached in the picture.

Is there any standard functions available to find the envelope.Please tell me how to find the envelope of a signal. 

[Meenatchi]

I have tried to find the envelope of the signal using Hilbert transform but i didnt get smooth waveform.
I have attached the vi which i tried..Please tell me what is the problem..How can i get smooth waveform

[ga101]

Look at this:

http://forums.ni.com/ni/board/message?board.id=170&message.id=371301

[Meenatchi]

u have sent me the same link

[ga101]

M sorry,

http://forums.ni.com/ni/board/message?board.id=170&message.id=314371&requireLogin=False