Real-time digital filters: infinite impulse response filters
Real-time digital filters fall into two main classes: finite impulse response (FIR) and infinite impulse response (IIR). In part one of this series, digital FIR filters were discussed. In this A/C interface the design, operation, and interpretation of digital IIR filters will be discussed. Two main types of digital IIR filters will be examined: the frequency-domain filter, which uses the reiterative estimation process to result in digital filter equivalents of analog frequency-domain filters, and the time-domain IIR filter, which is used for the estimation of signals with known time-domain dependence. This article is by no means comprehensive and will probably only whet the appetite of those who are interested in designing specific IIR filters. IIR filters are indeed difficult to understand. But a little understanding can go a long way in allowing one to design and use this type of filter.
- Research Organization:
- Utah State Univ., Logan (USA)
- OSTI ID:
- 7001166
- Journal Information:
- Anal. Chem.; (United States), Vol. 60:6
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
MEASURING INSTRUMENTS
SIGNAL CONDITIONERS
SPECTROPHOTOMETERS
DATA PROCESSING
DIGITAL SYSTEMS
FILTERS
GAS CHROMATOGRAPHY
ON-LINE MEASUREMENT SYSTEMS
RESPONSE FUNCTIONS
VOLTAMETRY
CHROMATOGRAPHY
ELECTRONIC CIRCUITS
FUNCTIONS
ON-LINE SYSTEMS
PROCESSING
PULSE CIRCUITS
SEPARATION PROCESSES
440300* - Miscellaneous Instruments- (-1989)
400102 - Chemical & Spectral Procedures