A new method for the calculation of room acoustical impulse responses is described, which is based on two well‐known computer algorithms, the ray‐tracing and the image‐source models. With the new method, the procedure of sieving the ‘‘visible’’ image sources out of the enormous quantity of possible sources is carried out by examination of the histories of sound particles. From the obtained list of visible image sources, the impulse response of the enclosure is easily constructed. The new method combines the advantages of the ray‐tracing process, namely, the relatively slow increase of computation time with the length of the impulse response, with the accuracy inherent to the image‐source model, which is even sufficient to calculate the Fourier transform, i.e., the steady‐state transmission function of the room, or to convolve the impulse response with sound signals.
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July 1989
July 01 1989
Simulation of the transient and steady‐state sound propagation in rooms using a new combined ray‐tracing/image‐source algorithm
Michael Vorländer
Michael Vorländer
Institut für Technische Akustik, Rheinisch‐Westf älische Technische Hochschule Aachen, Templergraben 55, D‐5100 Aachen, Federal Republic of Germany
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J. Acoust. Soc. Am. 86, 172–178 (1989)
Article history
Received:
August 12 1988
Accepted:
January 30 1989
Citation
Michael Vorländer; Simulation of the transient and steady‐state sound propagation in rooms using a new combined ray‐tracing/image‐source algorithm. J. Acoust. Soc. Am. 1 July 1989; 86 (1): 172–178. https://doi.org/10.1121/1.398336
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