DC bias
THE MEAN AMPLITUDE OF A WAVEFORM (ORIGINALLY, A DIRECT-CURRENT ("DC") WAVEFORM)
DC component; DC offset; Dc offset; DC-balanced; DC coefficient; DC-balance; AC coefficients; DC balance; DC balanced; DC-free; DC free; AC waveform
When describing a periodic function in the time domain, the DC bias, DC component, DC offset, or DC coefficient is the mean amplitude of the waveform. If the mean amplitude is zero, there is no DC bias.