Title :
Using the Goertzel algorithm as a filter
Author :
Zaplata, F. ; Kasal, M.
Author_Institution :
Dept. of Radio Electron., Brno Univ. of Technol., Brno, Czech Republic
Abstract :
The Goertzel algorithm is fairly known algorithm in tone detection systems. This effective realization of a partial Fourier transform is able to evaluate selected spectral bin by a very simple algorithm. Additionally, the Goertzel algorithm can be used as a digital filter. The paper introduces derivation of the frequency characteristics of the Goertzel filter. Finally, the novel filter structure has been proved to eliminate a decimation property of the filter.
Keywords :
digital filters; discrete Fourier transforms; Goertzel algorithm; Goertzel filter; decimation property; digital filter; discrete Fourier transform; filter structure; frequency characteristics; partial Fourier transform; tone detection systems; Discrete Fourier transforms; Equations; Filter banks; Filtering algorithms; Finite impulse response filters; Microwave filters; Fourier transform; Goertzel algorithm; Goertzel filter;
Conference_Titel :
Radioelektronika (RADIOELEKTRONIKA), 2014 24th International Conference
Conference_Location :
Bratislava
Print_ISBN :
978-1-4799-3714-1
DOI :
10.1109/Radioelek.2014.6828441
