Realtime filtering with lowpassfilter

[Donald_]

How can I realize a realtime filtering of two input signals with the filter above and detect the phase these signals in Realtime?

Is sombody here who has an idea how this works?

I have a Blackfinboard with an ADSP and need urgent help!

Regards, 

Johannes

[gwd]

Low pass filter-

Either use one of the low-pass filters under Analyze> waveform conditioning OR look up the mathematical definition in Labview Analysis Concepts and implement it yourself.

Phase detection-

Depends on how noisy the signals are and how accurate you need to be. Probably the easiest way is to compare first zero crossings. There are more elaborate and accurate ways to do this however.

[Donald_]

Thank you for your help,

the  base signal has a frequency of 20 Hz and the noise signal is about 20kHz. The signal is from a mircowave sensor.

I have to measure the phase between two input signals only concentrating  on their frequency (to determine the speed of an object) and only to determine the advanced or lagging phase to a reference signal. I don't have to determine the exact number of phase difference.

The Filter works. but the frequency and phase detecting not....

And I have no idea how to do this in real time on my Blackfin.

[Tommasogallo]

Can you send me your VI ?

[Tommasogallo]

Hello Donald, also I have your same problem. Can you send me your VI , please?