temporal filtering

[bimac]

• The temporal filter should not be a simple Gaussian but a band-pass filter with defined cut-off frequencies. The high-pass component would free us from slow signal drifts (changes in anesthesia, etc?), the low-pass component should help with high-freq (thermal, electrical) noise.

• The high-pass would remove the signal's DC offset. Since we're working with UINTS, the average offset would have to be added back in.

• The filter design should not rely on an additional toolbox (a potential candidate)