03-04-2009 05:01 AM
Hi,
I want to design a bandpass filter. Original signal is in analog form,ADC is used to convert input into digital data n vice versa at the output end. How to do it in labview 8.5 without addon tool kit. secondly how to check the response of filter according to this digital data,because by default it gives IMPULSE response,so how its going to deal with digital data...
Thanks !!
Solved! Go to Solution.
03-04-2009 07:12 AM - edited 03-04-2009 07:16 AM
For a bandpass filter you may cascade a lowpass and highpass filter. See this paged http://en.wikipedia.org/wiki/Digital_filter. Also do a search for digital filters on www.ni.com. For the paged filter response , just take the Fourier transform of the digital filter impulse response. See picture.
By the way If you ask nice I may send you some 'feed-backward' coefficients and 'feed-forward' coefficients. Since they are calculated in labview
03-05-2009 02:48 AM
Hi,
Thanks for the valueable info. It really helped me. I have couple of doubts like, how to get a gain of 80 db with the bandpass filter also how can i give analog signal(sound wave) as an input to this filter.
03-05-2009 03:44 AM
03-06-2009 12:55 AM
hi,
thanks..it seems that doubts r never ending,n now the latest one is, by default we can check the impulse rsponse of a filter,but if i wish to give continuous digital data,how this can be done?
03-06-2009 03:56 AM
03-16-2009 01:22 AM
hi..
Thanks alot fr ur help...Now the doubts r clear..till i find new ones,have a nice time !!
thanks once again.
03-16-2009 01:27 AM
Please mark which post of t06afre helps you as solution rather than marking your own post. Hope you understand.
Thanks,
Mathan