filter, inverse fft

[paganini]

hello,
i want to make a waveform filter in that way :

- make an fft of the input waveform
- mask somme data in frequency domain( unwanted values to 0)
- make an inverse fft to return to temporel domain

i have difficulties to implement inverse fft in Labview (7.0)
can you help me whith some examples

regards

[LocalDSP]

There has been some issues related to the correct interpretation of the IFFT format in LabVIEW 7.0. Check out for example the following exchange (that also includes implementation examples):

http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=137&HOID=506500000005000000C16E0100&HTHREAD=000093889&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0

I hope this helps solving your problem.