A subband implementation of a multichannel and multiple position adaptive room response equalizer. (February 2021)

• Record Type: Journal Article
• Authors: Cecchi, S.; Terenzi, A.; Bruschi, V.; Carini, A.; Orcioni, S.
• Is Part Of: Applied acoustics. Volume 173(2021)
• Publication Date: 2021-02
• Subjects: adaptive equalization -- room response equalizer -- channel decorrelation -- subband analysis -- magnitude response identification; Acoustical engineering -- Periodicals; Periodicals; 620.2
• DOI: 10.1016/j.apacoust.2020.107702
• Languages: English
• ISSNs: 0003-682X

Abstract

Highlights: In this paper, a subband adaptive multichannel room response equalization system is described. The main focus of the approach is the introduction of a subband identification procedure. The IRs estimation is performed by exploiting a decorrelation procedure. The equalizer is designed in the warped domain considering a multipoint magnitude equalization. Real Experiments show the beneficial effects of the subband identification on the procedure . Abstract: This paper deals with a subband implementation of an adaptive multichannel and multiple position room response equalization system capable of improving the listening experience in a real environment. The main focus of the approach is the introduction of a subband identification procedure capable of estimating in real-time the magnitude responses of a system with a great accuracy and a quick convergence. These aspects are very important also for the equalization procedure to obtain a good accuracy and quick development of the equalization filters as function of the environment variations. Several experiments have been performed in a real scenario to test the performance of the algorithm and to show the beneficial effects of the subband identification on the equalization procedure.