ABSTRACT
Signal-processing methods range from the well-proven and mostly used method using processing based on mathematical relationships that are very precise—these are explained elsewhere. These are generally executed using digital computation and are often referred to as digital signal-processing methods. Signal processing in the modern instrument, therefore, will often make use of many different methods. This account is an introduction to the characteristics of the various forms and is written to assist selection. Algorithmic method of signal processing is the most highly developed method and is certainly one to aim for because it is devoid of ambiguity. Algorithmic methods can be very accurate, traceable, and can be calibrated with relative ease and agreement. They are the basis of many instrumentation systems. The paradigm invoked here is that experience has shown that informal methods based on knowledge-based systems can produce mappings of many inputs to one by use of less than completely formal description.
