Third-Octave and Bark Graphic-Equalizer Design with Symmetric Band Filters

Graphic Equalizer Design Using Higher-Order Recursive Filters

A straight-forward design of graphic equalizers with minimumphase behavior based on recently developed higher-order bandshelving filters is presented. Due to the high filter order, the gain in one band is almost completely independent from the gain in the other bands. Although no special care will be taken to design filters with complementary edges except for a suitable definition of the cut-of...

Design Of A Simple Bandpass Filter Of A Third Octave Equalizer

As they are spread across almost all applications based on electrical circuits, frequency filters form one of the most complex issues on electronic devices. There exist a great number of different design methods based on various approaches. A large group of these filters is based on active components, namely amplifiers, that are equipped with the appropriate feedback to achieve the desired tran...

Bark scale equalizer design using warped filter

Bark scale (also called critical band rate in literature) has attracted increasing attention among audio engineers as a good measurement of the frequency resolving ability of human auditory system. In this paper, warped filter technique has been applied on Bark scale to construct an equalizer for a low-cost loudspeaker system. The resulted equalizer displays overall better equalization effect t...

Tree-structured IIR/FIR uniform-band and octave-band filter banks with very low-complexity analysis or synthesis filters

This paper introduces new tree-structured uniform-band and octave-band digital 'lter banks (FBs). These FBs make use of half-band IIR 'lters in the analysis FBs and FIR 'lters in the synthesis FBs. The resulting FBs are asymmetric in the sense that the analysis FB has a very low arithmetic complexity whereas that in the synthesis FB is higher. However, compared with other asymmetric FBs, the pr...

AN-435 Designing with the LMC835 Digital-Controlled Graphic Equalizer