who dares takeover ultrasound receiever?

[kushal.khanal]

any one can condition the signal received from ultrasound transducer avoiding noise????

received wave is sine wave with lots of noise of noise
even the noise has same frequency of 40khz
but they slightly differ by amplitude?????????
any one has played with ultrasound?
lets talk &take it over

 

[satyakumar]

Hi,
The question is not clear, can you elaborate your question.

 

[kushal.khanal]

i mean i want to create a band pass filter for ultra sound of 37-44 Khz; but have not succeded;

even if the ultrsound transducer is OFF, the receiver transducer receieves noise from environment but of less amplitude;

so any circuitry tips to select required band of signals?

should i try active or passive band pass filter?

and i need to convert the sine wave receieved to square wave?

how should i proceed?

waiting

regrets
kushal khanal