Filter the data to WAV butterworth - problem

Hello!!

I have LabVIEW 2013

I m new in matlab and I have the following problem:

I want to filter voice and data to WAV file with block Butterworth Filter.vi. I don't know how to load the signal with his reading file Simple.vi, I know how to get the info on file with the Info.vi file, and I know that I can display data of waveform with waveform chart/graph. But I do not know how to properly set up butterworth filter in my diet, or better said how to properly bring data on this subject. When I m try to display data filtered with waveform graph I get only flat line.

I already checked OR examples (IIR Filter Design, IIR filter using option Specs, IIF assigned and response, IIR filter design). But after that, I felt even more stupid and lost.

In fact, depends on number of channels (mono/stereo) - should I separate?

Do I have to use a loop?

Second question - how many changes I have to do when I want to have a filtering in real time with filter.vi to butterworth (for example - to obtain data from the microphone)

Thank you very much!

Hi TOM 5 times.

you set a low pass of the 1st order, so he dampens high frequencies with only 20 dB/decade. It will NOT erase anything greater than 10 Hz, it will be just wet it!

You must use an order higher for your low-pass filter to effectively cancel higher frequencies!

Tags: NI Software

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