Second difference detrending

Summary

• Plugin name : Second difference detrending
• Version : 0.1
• Author : Fabien Lotte
• Company : IRISA/INSA Rennes
• Short description : Detrend the data using the second differencing method.
• Documentation template generation date : Oct 18 2012
• WARNING : this box has been marked as DEPRECATED by the developer. It will be removed soon or later, so you should consider not using this box and turn to another "equivalent" one.

Description

This box algorithm enable to perform detrending using the first differencing method. This means the new time series u_t, corresponding to the detrending of the time series x_t, will simply be such that u_t = w_t - w_{t-1} with w_t = x_t - x_{t-1}

This box algorithm enable to perform detrending using the first differencing method. This means the new time series u_t, corresponding to the detrending of the time series x_t, will simply be such that u_t = w_t - w_{t-1} with w_t = x_t - x_{t-1}

Inputs

1. Input signal

the input signals to be detrended

• Type identifier : Signal (0x5ba36127, 0x195feae1)

Outputs

1. Detrended signal

the detrended signals

• Type identifier : Signal (0x5ba36127, 0x195feae1)

Examples

This box is used to remove a trend from the signal of each electrode, that is very slow variation of the signals. It is a cheap high-pass filter.

Miscellaneous

This box triggers a delay of 2 samples (needed to start the detrending)