Source directivity is an important input variable when using room acoustic computer modeling programs to generate auralizations. Previous research has shown that using a multichannel anechoic recording can produce a more natural sounding auralization, particularly as the number of channels is increased [J. H. Rindel, F. Otondo, and C. L. Christensen, Proceedings of the International Symposium on Room Acoustics: Design and Science 2004, Paper V01 (2004)]. Further studies evaluating the quality of auralizations using one‐channel, four‐channel, and 13‐channel anechoic recordings have been pursued. The effect of changing the room’s material properties was studied in relation to turning the source around 180 deg and on the range of acoustic parameters from the four‐ and 13 beams. As the room becomes increasingly diffuse, the importance of the modeled directivity decreases when considering reverberation time. However, for the three other parameters evaluated (sound‐pressure level, clarity index, and lateral fraction), the changing diffusivity of the room does not diminish the importance of the directivity. The study therefore shows the importance of considering source directivity when using computer modeling. [Work supported by the National Science Foundation.]
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October 2004
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October 01 2004
Differences in directional sound source behavior and perception between assorted computer room models
Michelle C. Vigeant;
Michelle C. Vigeant
Architectural Eng. Program, Univ. of Nebraska‐Lincoln, Peter Kiewit Inst., 1110 S. 67th St., Omaha, NE 68182‐0681, [email protected]
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Lily M. Wang;
Lily M. Wang
Architectural Eng. Program, Univ. of Nebraska‐Lincoln, Peter Kiewit Inst., 1110 S. 67th St., Omaha, NE 68182‐0681, [email protected]
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Jens Holger Rindel
Jens Holger Rindel
Tech. Univ. of Denmark, DK‐2800 Kgs. Lyngby, Denmark
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Michelle C. Vigeant
Lily M. Wang
Jens Holger Rindel
Architectural Eng. Program, Univ. of Nebraska‐Lincoln, Peter Kiewit Inst., 1110 S. 67th St., Omaha, NE 68182‐0681, [email protected]
J. Acoust. Soc. Am. 116, 2485 (2004)
Citation
Michelle C. Vigeant, Lily M. Wang, Jens Holger Rindel; Differences in directional sound source behavior and perception between assorted computer room models. J. Acoust. Soc. Am. 1 October 2004; 116 (4_Supplement): 2485. https://doi.org/10.1121/1.4784923
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