Archives of Acoustics, 31, 1, pp. 89-97, 2006

Active control of sound by means of digital equalizers

W. CIESIELKA
AGH University of Science and Technology Department of Mechanics and Vibroacoustics

A. GOŁAŚ
AGH University of Science and Technology Department of Mechanics and Vibroacoustics

The article describes single-channel digital systems, enabling active sound control according to the set criterion. Theoretical fundamentals of these systems are based on digital filter theory, using which the digital graphic, phase, inverse and adaptive equalizers have been designed and programmed. The described systems have been implemented into two cards with signal processors TMS320C25 and TMS320C31 made by Texas Instruments. The article presents mathematical models of the above mentioned equalizers and results of the experimental tests, which verify their performance.
Keywords: active sound control, digital equalizer
Full Text: PDF


Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN)