A. KACZMAREK, A. CZYŻEWSKI, and B. KOSTEK, “Investigating polynomial approximations for the spectra of the pipe organ sound”, Arch. Acoust., vol. 24, no. 1, pp. 3–24, Mar. 2004, Accessed: Apr. 25, 2025. [Online]. Available: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/889