Given two inputs a
and b
, let da[t] = abs(a[t] - a[t - 1])
and db[t] = abs(b[t] - b[t - 1])
. Output a[t]
if da[t]
is smaller, and output b[t]
if db[t]
is smaller. If da[t] == db[t]
, use whichever input was used last (assume a
for the first sample of output).
a |
Input signal A. |
b |
Input signal B. |
the control that changed least is used as output: