Modern architectural space is increasingly demanding for acoustic quality, and a good acoustic environment not only relates to the comfort of users, but also directly affects the effect of spatial function. In this paper, to address the issue of the influence of sound-absorbing material configuration on the sound field uniformity in the indoor acoustic environment, using the quadratic residual diffuser (QRD) material, through the establishment of the reverberation laboratory model, the design of seven different material arrangement combinations of the program, the use of VA-Lab6 acoustic test system to measure and analyze the sound pressure level, reverberation time and other key acoustic parameters. The results of the study showed that in the horizontal alternating arrangement scheme of the side walls, combination mode 3 achieved a total score of 38 in the loudspeaker source condition and 34 in the normal male voice condition, both of which were the highest scores; When the rear wall was arranged vertically and alternately, combination mode 4 scored 37 points in the loudspeaker condition, the best performance; The modal density analysis shows that the modal density is 37 in the 500Hz band and reaches 75 in the 1000Hz band, which meets the sound field diffusion requirements. The quantitative assessment of sound field uniformity reveals that the reasonable configuration of sound-absorbing materials can significantly improve the uniformity of indoor sound field distribution, which provides a scientific basis and practical method for the artistic design of indoor acoustic environment.
