A new approach to the room impulse response simulation

• Autorzy: Łopacz H. , Marczuk R.
• Języki publikacji: EN

Abstrakty

EN

The most important problem of room acoustics is the evaluation of the acoustic quality of projected and modernized rooms. To this end it is necessary to work out a calculating impulse response algorithm for a digital room model. The virtual rooms impulse response manners of modeling are described in the article. The impulse response synthetic models have been evaluated on the basis of selected numerical factors and a simple auditory test. Thanks to the impulse response calculation it is possible to evaluate the subjective and objective room acoustic properties and hence to run the room simulation tests (the sound sources configuration, the room planning) in order to reach optimal solutions, which meet a given criterion. The problems described are related to the ''virtual sound space'' concept. Intuitively, we mean by this a sound reality model, which enables, on the basis of the model and measurement data, an audio impressions simulation of the existing and being under projection acoustic systems. A basic process, which enables the sound reception, is the test signal and the impulse response convolution.

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2004
• Tom: Vol. 29, no. 1
• Strony: 61--85
• Opis fizyczny: Bibliogr. 24 poz., rys., tab., wykr.

Twórcy

autor

Łopacz H.

• AGH – University of Science and Technology, Mechanics and Vibroacoustics Department, Al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Marczuk R.

• AGH – University of Science and Technology, Mechanics and Vibroacoustics Department, Al. Mickiewicza 30, 30-059 Kraków, Poland

Bibliografia

• [1] Y. ANDO, Concert hall acoustic, Springer-Verlag, Berlin, Heidelberg, New York, Tokyo 1985.
• [2] Ś. BASKAKOW, Signals and systems of radio engeeniring [in Polish], PWN Scientific Publishing, 1991.
• [3] L. BERANEK, Concert and opera halls. How they sound, American Institute of Physics for Acoust. Soc. of Am., 1996.
• [4] I. DAUBECHIES, Ten lectures on wavelet, SIAM, Philadelphia 1992.
• [5] A. FARINA, Auralization software for the evaulation of the results obtained by a pyramid tracing code: Results of subjective listening tests, Proc. Int. Conf. on Acoustics, Trondheim 1995.
• [6] A. FARINA, E. UGOLOTTI, Numerical model of sound fileld inside cars for the creation of virtual audible reconstruction, Proc. DAFX, Barcelona 1998.
• [7] A. GOŁAŚ, Computer method analysis in room and enviromental acoustics [in Polish], AGH Publishing, 1995.
• [8] A. GOŁAŚ, J. WIERZBICKI, H. ŁOPACZ, Convolution of simulated room impulse response with exciting sound signals, 94-th AES Convention, Berlin 1993.
• [9] A. GOŁAŚ, J. WIERZBICKI, H. ŁOPACZ, Signal simulation based on convolution of room impulse response, 92-nd AES Convention, Vienna 1992.
• [10] A. GOŁAŚ, J. WIERZBICKI, H. ŁOPACZ, Estimation of simulated room impulse response, V-th Symposium on Sound Engineering and Mastering, Wrocław 1993.
• [11] T. HOUTGAST, H. J. M. STEENEKEN, Rasti. the modulation transfer function in room acoustics, Technical report, Bruel & Kjaer, 1985.
• [12] E. KARAŚKIEWICZ, A. ŚLIWIŃSKI, M. ŁABOWSKI, E. OZIMEK, Comparison room acoustical study with model simulation result on main theather in Warsaw [in Polish], Acoustics. UAM Publishing, Poznań 1966.
• [13] H. KUTRUFF, Room acoustic, Elsevier, 1991.
• [14] S. MALLAT, A wavelet tour of signal processing, Academic Press, New York 1998.
• [15] R. MARCZUK, Discrete and continuous impulse response models of acoustics systems [in Polish], Ph. d. (unpublished), AGH University of Science and Technology, Kraków 2001.
• [16] H. ŁOPACZ, Develope of room impulse response model [in Polish], Open Seminary of Acoustics, Gliwice – Ustroń 1996.
• [17] H. ŁOPACZ, P. KLECZKOWSKI, Room impulse response based on the discrete wavelet transform, 109-th AES Convention, Los Angeles 2000.
• [18] H. ŁOPACZ, T. ZIELIŃSKI, Time – frequency analyses of room impulse response with use short Fourier transform and wavelet transform [in Polish], Open Seminary of Acoustics, Wrocław 1994.
• [19] S. J. ORFANIDIS, Introduction to signal processing, Prentice Hall, England Cliffs, 1996.
• [20] RAYNOISE, User’s Manual, Reference Manual, Examples Manual. Revision 2.1a.
• [21] J. SADOWSKI, Acoustics in town planning, architecture and building industry [in Polish], Arkady, Warszawa 1971.
• [22] J. SADOWSKI, Architectural acoustics, PWN Scientific Publishing, 1976.
• [23] M. R. SCHROEDER, New method of measuring reverberation time, Journal of Acoust. Soc. of Am., 37, 409–412, 1965.
• [24] M. R. SCHROEDER, Modulation transfer functions: Definition and measurement, Acoustica, 49, 179–178, 1981.