Title :
Optimized windows for FIR filter design to perform maximally flat decimation stages in signal conditioning
Author :
Andria, G. ; Savino, M. ; Trotta, A.
Author_Institution :
Dept. of Electrotech. & Electron., Bari Univ., Italy
Abstract :
New cosine windows are proposed which allow maximally flat low-pass FIR filter realizations in a multistage decimation process. In digital measuring devices, this strategy is performed in order to adjust the amount of data to the storage-capabilities of the processor, in conjunction with filtering the data set available after oversampling to remove digitally the noise power produced by quantization. The consequent increase of the number of effective bits improves the dynamic performances of digital instrumentation, especially at lower frequencies
Keywords :
digital filters; digital instrumentation; optimisation; signal processing; signal processing equipment; FIR filter design; cosine windows; digital instrumentation; digital measuring devices; dynamic performances; maximally flat low-pass FIR filter; multistage decimation; noise power; optimised windows; oversampling; quantization; signal conditioning; Design optimization; Digital filters; Filtering; Finite impulse response filter; Frequency; Instruments; Noise measurement; Performance evaluation; Power measurement; Quantization;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1991. IMTC-91. Conference Record., 8th IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-87942-579-2
DOI :
10.1109/IMTC.1991.161666
