# Dictionary:Autocovariance

(o, tō kō’ ver ē ∂ns) Similar to an autocorrelation except that the mean value ${\displaystyle {\bar {f}}}$ is subtracted before the integration, and normalization is not done:
${\displaystyle \int _{t_{1}}^{t_{2}}\left[f(t)-{\bar {f}}\right]\left[(t-\tau )-{\bar {f}}\right]dt}$ .