Modeling of sound propagation tract using Walsh transform

• Autorzy: Zak A.
• Języki publikacji: EN

Abstrakty

EN

Paper presents problem of modeling sound propagation tract basis on orthogonal system of Walsh functions. Proposed method allow for determination of sound propagation tract model which among others thing should gives possibility to prediction parameters of sound source. First of all the technique of Walsh Transform is presented in details. The mathematical description of Walsh Transform as well as detail description of calculation process were presented. Secondly the example results of preliminary research carried out on simulated signals as well as vibrations and hydroacoustics signals acquired during real condition measurement of motorboat were presented. At the end obtained results were discussed and direction of the future research were pointed.

Słowa kluczowe

EN

orthogonal system; measurement of motorboat

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2015
• Tom: Vol. 18
• Strony: 193--201
• Opis fizyczny: Bibliogr. 4 poz., rys.

Twórcy

autor

Zak A.

• Polish Naval Academy, Smidowicza 69, 81-103 Gdynia, Poland

Bibliografia

• [1] N. Ahmed, K.R. Rao, Orthogonal transforms for digital signal processing, Spring- Verlang, Berlin 1975.
• [2] K.G. Beauchamp, Walsh functions and their application, Academic Press, 1975.
• [3] J. Garus, Recursive method of generation operating matrix for function convolution operations in a discrete base of Walsh [in Polish], Scientific Papers of PNA no 1, Gdynia 1992.
• [4] J. Garus, Identification of the parameters of the movement of sailing objects in operating conditions using numerical methods [in Polish], Doctoral Dissertation, PNA, Gdynia 1993.