A round robin test has been conducted to examine the interaction between a loudspeaker and the room with respect to fidelity of timbre of reproduced sound.: Three rooms, three loudspeaker positions, four loudspeakers, four programs, and six subjects were used for the experiment. The statistical analyses show that the main factors which have a significant influence on the assessment of fidelity of timbre are room, loudspeaker position, loudspeaker, and program. Several of the interactions between the main factors are significant, however the most important is that between loudspeakers and positions.: The results show that the room will influence a) the overall fidelity of timbre of the reproduced sound in all positions; b) the perceived differences between loudspeakers in similar positions; and c) the perceived differences between loudspeakers in different positions in the same room. The loudspeaker position will also have a significant effect on the level of fidelity of timbre. The degree of influence of the room and of the positions will depend on the directivity characteristics of the loudspeaker.:
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