Reconstruction for 3D distribution of loudness in sound field
JIN Jiangming1， LU Huancai1， LI Minzong2
1. College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2. Zhejiang Provincial Key Lab of Signal Processing, Hangzhou 310014, China
The loudness 3D distribution reconstruction method was proposed by combining the nearfield acoustic holography method and the sound quality objective parameter-loudness calculation method. With this method, the mapping model from sound pressure to sound quality objective parameter-loudness was built to calculate sound quality objective parameter values at different positions in sound field. The 3D distribution of loudness was reconstructed. Two kinds of sound field with one monopole sound source and two ones, respectively were used to conduct numerical simulation analyses for the loudness 3D distribution reconstruction model. The effects of reconstruction distance, sound frequency, and intersection angle between two sound sources on the reconstruction accuracies of acoustic pressure and loudness 3D distribution were examined. Finally, the rigid spherical microphone array was employed to experimentally verify the loudness 3D distribution reconstruction model in a two-monopole sound field inside an anechoic room. The simulation and test results showed that the proposed method can effectively realize the reconstruction of loudness 3D distribution based on reconstruction of nearfield acoustic holography sound field.
金江明1，卢奂采1，李敏宗2. 响度三维空间分布重建[J]. 振动与冲击, 2017, 36(24): 108-115.
JIN Jiangming1， LU Huancai1， LI Minzong2. Reconstruction for 3D distribution of loudness in sound field. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(24): 108-115.
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