An adaptive equalization scheme using acoustic energy density
Xi Chen, Scott D. Sommerfeldt, Timothy Ward Leishman · The Journal of the Acoustical Society of America · 2004
This paper presents an equalization system based on the filtered-x algorithm and acoustic energy density. Previous theoretical results have shown that equalization filters using acoustic energy density produce greater spatial uniformity in equalization than those using acoustic pressure. The paper discusses the implementation of the equalization system in a one-dimensional duct. An adaptive algorithm is utilized in the time domain to determine and apply the equalization filter. Results from a traditional filter design and the energy density filter design are compared.