Physiological measurement device, method and program

A physiological measurement device comprising a processor configured to input at least one digital signal (x) from frontend circuitry of the measurement device,

• the digital signal (x) representing an analog signal(s) present at an input of the frontend circuitry and at least one filtered digital signal (y),
• the filtered digital signal (y) generated by at least one digital filter from the digital signal (x) based on a set of filter coefficients (f·sub·k);
• a coefficient calculator configured to perform an adaptation operation based on the digital signal (x) and the filtered digital signal (y), wherein the adaptation operation is subject to at least one value constraint related to a filter coefficient (f·sub·k);
• and
• a checker configured to determine alarm information (A) from a result (f·sub·k, g·sub·1) of the adaptation operation,
• wherein the checker is a constraint checker operating based on at least one constraint defined for at least one variable of the result of the adaptation operation, wherein determining the alarm information comprises checking at least one alarm constraint against the result of the adaptation operation, the at least one alarm constraint being a subset of the at least one value constraint, and
• wherein the alarm information (A) comprises multiple alarm information elements (a·sub·1, . . . , a·sub·N) related to different alarm types, a specific alarm constraint being assigned to each of these alarm information elements.