matlab filter function to labview filter function

[Nirav_Virpara]

hello ,

this matlab code for wav file read and filter them

[x,fs]=wavread('apple11.wav');

subplot(121);plot(x);title('x waveform 1');

xx=double(x);


y=filter([1 -0.9495],1,xx);

i have xx array in labview.

now i want to filter them same as in matlab ,,

anyone know ...  how can do this ?

please help me .. 🙂

[danil33]

Hi Nirav,

             Try Signal Processing -> Filters palette. Also you could try using MatScript node (MathScript module required) for the Matlab commands implemented in LabVIEW directly.

[Henrik_Volkers · Accepted solution]

Matlab help tells you:

y = filter(b,a,X) filters the data in vector X with the filter described by numerator coefficient vector b and denominator coefficient vector a. If a(1) is not equal to 1, filter normalizes the filter coefficients by a(1). If a(1) equals 0, filter returns an error.

now have a look at the LabVIEW IIR digital filters

[Nirav_Virpara]

Thanks a lot sir 🙂 🙂

its very helpful to me ... 🙂 🙂

[AdamBlues]

I'm not sure what's going on here, do you have you forward coefficient just set to one?

Adam