Naslov
Adaptive Design of Linear-Phase Maximally Flat Filters for Digital Audio

Autori
Dadić, Martin ; Sruk, Vlado ; Somek, Branko

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
CD-ROM Proceedings of the Thirtheenth International Congress on Sound and Vibration (ICSV13) / Eberhardsteiner, J ; Mang, H.A. ; Waubke, H. - Beč : Vienna University of Technology, 2006

Skup
Thirtheenth International Congress on Sound and Vibration (ICSV13)

Mjesto i datum
Beč, Austrija, 02.07.2006. - 06.07.2006

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
digital audio; linear phase

Sažetak
Linear phase response and flat magnitude response are highly desirable characteristics of any filter in audio signal processing. This paper proposes a simple and efficient novel procedure for the design of finite impulse response (FIR) maximally flat filters with linear phase. The procedure is based on Butterworth polynomials, bilinear transformation and adaptive inverse modelling. Instead of using prescribed magnitude response through a set of discrete values, the designed filter has magnitude response equal to the squared magnitude response of a Butterworth filter. Instead of multisine excitation, random noise is used as the excitation signal for the adaptive process. The delayed noncausal impulse response component is approximated using the causal impulse response of a finite impulse response filter. Possible applications of newly proposed design method are in restoration of old analogue audio recordings, acoustical measurements or audio engineering.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika, Računarstvo

POVEZANOST RADA