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EEG Data Cleaning
by Gaia ·Hi Gaia, as long as your filters and DSP processing has fixed parameters, it should not make any difference. If the processing is 'adaptive' to the content, then it is better to separate. -
EEG Data Cleaning
by wjcroft ·Hi Gaia, as long as your filters and DSP processing has fixed parameters, it should not make any difference. If the processing is 'adaptive' to the content, then it is better to separate. -
how to remove scalar factor from text file generated from GUI
by wjcroft ·https://www.google.com/search?q=comparing+DSP+filter+types+butterworth+bessel+elliptic+etc -
How to Save Filtered Data in OpenBCI GUI?
by wjcroft ·In signal processing EEG, it is generally recommended to minimize the number of filtering steps, as each additional DSP filtering pass introduces slight degradations in the signal quality. That is the -
Odd frequency spikes
by wjcroft ·Here are the types of DSP filters: bandpass (specifying a range), low pass, high pass, bandstop (or notch). You apparently have a bandpass from say .4 Hz to 30 Hz. DSP filters also have a 'type' such -
How to use python or Brainflow to smooth uvrms in GUI?
by wjcroft ·Have you considered a tutorial on DSP Digital Signal Processing. Many exist in many different computer language libraries, including Matlab. -
Delay or Latency Between Sensors and On-Screen Feedback
by wjcroft ·https://www.google.com/search?q=dsp+filter+delay -
filtering and phase shift?
by wjcroft ·All DSP digital filters introduce some amount of phase shift. If you are applying similar filter parameters to each channel you are using, then ALL channels will shift the same amount. Thus you can co -
plotting brain states - beta, alpha, theta, etc. over time
by wjcroft ·https://www.google.com/search?q=python+dsp+tutorial -
plotting brain states - beta, alpha, theta, etc. over time
by wjcroft ·The 'minimal' required steps to do the DSP Digital Signal Processing are shown in that Python program. As you can see there are a significant number of steps, such as computing the FFT, and then separ -
Problem regarding the EEG signals captured
by wjcroft ·The recording / raw data files from the GUI, are RAW. NO filters have been applied. You need to use a DSP library (digital signal processing) that has filters to apply, at the minimum: say a bandpass -
Cortex Mark IV EEG head and Arduino for controlling fingers movement
by wjcroft ·Arduino boards are underpowered for DSP digital signal processing. You would be better off with something like a Raspberry Pi, then you can plug the dongle directly into the Pi. -
Ecg analog out from Cyton
by wjcroft ·In addition to the DSP functions in Brainflow, there are a plethora of DSP libraries available in every conceivable computer language. -
issue building OPENBCI_GUI in Processing ?
by wjcroft ·As far as analysis / DSP digital signal processing goes -- this is much better done with external DSP libraries, packages, for some examples see, -
noise, high impedance: electrode cap with Cyton+Daisy
by Saima ·Do the results look normal with the GUI, but extremely low with your Matlab? In that case, suspect your Matlab DSP operations. -
noise, high impedance: electrode cap with Cyton+Daisy
by wjcroft ·Do the results look normal with the GUI, but extremely low with your Matlab? In that case, suspect your Matlab DSP operations. -
Data collection with LSL
by wjcroft ·Ah, forgot that the LSL Networking Widget does not show the proper label for the 'filtering' buttons. In any event it sounds as if the filtering feature is not working, is that your experience? If thi -
Cyton RC pre-filter values
by wjcroft ·No DSP filtering happens on the Cyton. The GUI recording file is raw, no filtering. But the GUI screen display filtering can be adjusted with the menus. -
ADS1299 to Cyton Pins
by Josh_IML ·Godspeed! -
How to attenuate artifacts from muscle movement and head movement?
by wjcroft ·In general, the 'easiest' approach is to try to minimize head, face and eye movements during recording. The above paper contrasts different signal processing methods that can be applied to 'automatica