Convert data to time domain to FFT perform

[ducta9]

I have a data file EMG signal .tdms, the signal represented by number of samples and amplitude (24bit data). I want to perform this signal into a time domain to perform spectral analysis EMG signal.
I look forward to help me continue my project.

I send all write file and read file the signal EMG signals

Thanks so much.

P/s: Read EMG Signal read data file sEMG_1.tdms

EMG monitor write EMG signal acquisition to sEMG_1.tdms

[ducta9]

Who help me!help!help!

Thanks.

[Dennis_Knutson]

Since you are not acquiring or saving any time information, your question does not make much sense. Not sure what anyone could do without the file either.

[ducta9]

Thank for your answer.
Can you help me given the solution to acquisition signal better?
I use 24bit ADC, sampling 16kSps.

[Dennis_Knutson]

I have no idea what sort of data your are reading with the serial connection. Is it multiple points or a single one? From your data, you can create a waveform data type and write your dt to it. The dt is necessary for spectrum analysis. The default when it's not in the file is 1 second.

[ducta9]

Thanks for your help.
I'm not experience use LabVIEW and signal processing so I will try.
This is the file .tdms I have recorded from the recording system on above.

I can'n attach file.tdms so I give file link dropbox: https://www.dropbox.com/s/ujicvk3a0i6mp3y/sEMG_1.tdms

[Dennis_Knutson]

Until you modify the VI that saves your data, your VI that reads the file is going to return incorrect results.

I am not going to some of third party site. You can zip the file up and post it here.

[ducta9]

I'm Vietnamese. In Vietnam is 0h00 3/15/2014 so I will retry in the morning. Thanks.

[johnsold · Accepted solution]

As Dennis pointed out, you need timing information. One simple way (since you are not recording it in the file), is to have the user enter the sample rate on the analysis VI.

Graphs are probably more appropriate than charts. Charts work best when acquiring one point at a time while graphs are better for blocks of data.

Lynn

[ducta9]

Thanks johnsold.

Your solution is feasible, I will try to apply to my project.

Thanks and I wish the help of everyone for me.