Remove DC offset from a signal

Subtracts the signal mean (per-channel DC offset removal). Should be applied before filtering to prevent filter transients from a non-zero baseline.

Usage

remove_dc(signal)

Arguments

signal

Numeric vector.

Value

Numeric vector with mean removed, same length as signal.

Examples

x <- c(100.1, 100.5, 99.8, 100.3)
remove_dc(x)
#> [1] -0.075  0.325 -0.375  0.125