Real Time Digital Filters: Finite Impulse‐Response Filters
In the past, chemists were not concerned with filtering, because data were obtained using analog instrumentation with hardware analog filters. The most common implementation of a filter consisted of a network of resistors and capacitors to affect the frequencey characteristics of signal transfer. However, with the recent advent of affordable digital processor-based data acquisition systems, real-time digital filtering is becoming an ever-increasing facet of the modern analytical laboratory. Proper use of digital filters can result in data with dramatically improved signal-to-noise (S/N) ratios and in the simplification of complex information. Digital filtering is not a magical procedure for data transformation. The trick to proper implementation of the digital filter is prior knowledge of the system's signal and noise components.
Real Time Digital Filters: Finite Impulse‐Response Filters Stephen E. Bialkowski Analytical Chemistry 60 355A 1988