144th AES CONVENTION Tutorial T03: Perceptually Motivated Filter Design with Applications to Loudspeaker-Room Equalization

AES Milan 2018
Tutorial T03

Wednesday, May 23, 10:15 — 11:15 (Scala 3)

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T03 - Perceptually Motivated Filter Design with Applications to Loudspeaker-Room Equalization

Presenter:
Bal√°zs Bank, Budapest University of Technology and Economics - Budapest, Hungary

Digital filters are often used to model or equalize acoustic or electroacoustic transfer functions. Applications include headphone, loudspeaker, and room equalization, or modeling the radiation of musical instruments for sound synthesis. As the final judge of quality is the human ear, filter design should take into account the quasi-logarithmic frequency resolution of the auditory system. This tutorial presents various approaches for achieving this goal, including warped FIR and IIR, Kautz, and fixed-pole parallel filters, and discusses their differences and similarities. It also shows their relation to fractional-octave smoothing, a method used for displaying transfer functions. With a better allocation of frequency resolution, these methods require a significantly lower computational power compared to straightforward FIR and IIR designs at a given sound quality.

AES Technical Council This session is presented in association with the AES Technical Committee on Loudspeakers and Headphones and AES Technical Committee on Signal Processing

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