How to compare two .tdms signals different files?
I develop a lie detection system in labview.so Inorder for that I need to compare the physiological threshold signals in the file .tdms with signals that I acquire the object for each question asked.i continuelsy use breathing and heart beat monitor as well as the sensorDAQ to acuire the physiological signals.so that are the function I should make use of? I have the following tools
1 advanced signal processing toolkit
2 adaptive filter toolkit
3. digital filter design toolkit
4 research biomedical toolkit
Please give advise me on this.
Thank you.
Systems of lie detector (polygraph) generally work looking at physiological responses to the baseline subjects own and this in real time. You can use a file that represents the stored "database" for the subject, but the overall environment, the circumstances, the general State of the subject, etc. is perhaps not sufficiently similar to easily see the subtle changes.
From the stored file, you can determine a set of parameters or thresholds that indicate "normal, relaxed" for each signal. You can play the file in your LabVIEW program, treat each channel and save these settings. Then when you have the new data, you can read the new data file in and treat in a similar way and then determine if the settings are off limits you set for a 'lie '.
You can get more answers to this question if posted in the Biomédical User Group
Tags: NI Software
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