Hi
I would like to implement in C an envelope detector filter.
The input is a WORD (16 bit) array representing the voice echo signal of a transducer transmitting in 50 Khz (what should be the size?) It also should represent 10 meters distance.
The output is an array contaning the envelop
The Filter is:
envelop detection = sqrt (Hilbert transform^2 + Signal^2)
I will appriciate it if somebody could send me the code implementation.

Thanks
Eyal
EMAIL: eyalkatz@bezeqint.net