can anyone tell me weather my filtering technique and wiring is correct or not.

[Illa]

.i am unable to see the filter FFT, i have attached my blockdiagram and filtersettings and graph

[ZJ.Gu]

Hi illa,

Did you try to change the instance type of DFD Filtering.vi to DBL not DBL 1D? as actually your data is point by point. And there is no need to convert to dynamic type before feeding the filtering VI.

The best way is to buffer your point data into an array for calculating the spectrum.

Thanks!

ZJ Gu

[Illa]

sir,

i changed it now i am attaching my VI and output graph,please have a look and tell weather it is correct or not ,i find some ripples(question marked in graph)

i want to caluclate the RMS value of the filtered output for a particular duration,and  it should repeat the same for next updated duration ,basing on that duartion RMS value i will make a threshold to show a indicator on front panel.(if there is EMG RMS threshold front panel indicator glows or none)

you have sent me one one biomedical source kit,in that i am using average RMS ,what does averaging time means,how can i decide that . my sampling rate is 1800 and software looptime is 5ms.can i use this block to acheive my above goal,please guide me how i should proceed in this.

[ZJ.Gu]

Hi,

You could refer to https://decibel.ni.com/content/docs/DOC-8206. And I think this function requires an array input not point data.

Thanks!

ZJ Gu