Signal Analyser for Use in Displaying Information Related to Physiological Parameters

The signal analyser 100 is operable to receive one or more signals and then to analyse the signals with respect to particular properties before outputting an indication as to the classification of the signal with respect to each property. Typically this indication is in the form of a plurality of belief index ratings, the magnitude of each belief index rating relating to the likelihood of the corresponding classification being accurate. This is achieved by incrementing or decrementing one or more individual belief index values (see figure 2) in response to the identification of predetermined signal features by the signal processing means 102, which belief index values are incremented or decremented and by how much is determined by the particular signal feature detected. Typically, this data is retrieved from a suitable look up table stored in the data storage means 104. The data storage means 104 is also operable to store a copy of the received signals for future reference. Information may be output on a display 105 and a notification/alarm unit 107 is operable to generate an alarm or notification in response to the determination of particular classifications or reclassifications by the classification engine.