Title :
Modeling of reflections and air absorption in acoustical spaces a digital filter design approach
Author :
Huopaniemi, Jyri ; Savioja, Lauri ; Karjalainen, Matti
Author_Institution :
Helsinki Univ. of Technol., Hut, Finland
Abstract :
A method is presented for modeling sound propagation in rooms using a signal processing approach. Low order digital filters are designed to match to sound propagation transfer functions calculated from boundary material and air absorption data. The technique is applied to low frequency, finite difference time domain (FDTD) simulation of room acoustics and to real-time image-source based virtual acoustics
Keywords :
acoustic materials; acoustic signal processing; acoustic variables measurement; acoustic wave absorption; acoustic wave propagation; acoustic wave reflection; architectural acoustics; digital filters; digital simulation; finite difference time-domain analysis; image processing; rendering (computer graphics); transfer functions; FDTD simulation; acoustic materials measurement; acoustical spaces; air absorption data; boundary material data; digital filter design; finite difference time domain; low frequency simulation; low order digital filters; real-time image-source based virtual acoustics; real-time rendering; room acoustics; signal processing; sound propagation transfer functions; sound reflections; Absorption; Acoustic materials; Acoustic propagation; Acoustic reflection; Acoustic signal processing; Digital filters; Finite difference methods; Frequency; Time domain analysis; Transfer functions;
Conference_Titel :
Applications of Signal Processing to Audio and Acoustics, 1997. 1997 IEEE ASSP Workshop on
Conference_Location :
New Paltz, NY
Print_ISBN :
0-7803-3908-8
DOI :
10.1109/ASPAA.1997.625594
