Hello!!
I have LabVIEW 2013
I´m new in matlab and I have following problem:
I want to filter speech/voice data from WAV file with block Butterworth Filter.vi. I know how load signal with Sound File Read Simple.vi, I know how to get info about file with Sound File Info.vi and I know that I can display waveform data with waveform graph/chart. But i dont know how to correctly set up butterworth filter in to my scheme, or better said how to correctly bring data on it. When I´m trying to display filtered data with waveform chart I only get flat line.
I have already checked NI Examples (IIR Filter Design, IIR Filtering Using Optional Specs, IIR Filterin and Response, IIR Filter Design). But after that i felt even more stupid and lost.
Does number of channels depends (mono/stero) - do I have to separate it?
Do I have to use some loop?
Second question - How many changes I will have to make when I will want to have real-time filtering with butterworth filter.vi ( for example - with getting data from microphone )
Many thanks!