阔叶树材横切面构造的涨落谱分析

Fluctuation spectrum analysis on cross-section structure of hardwoods

阔叶树材多用作室内装饰装修材料,主要是由于其组织构造复杂多变而具有较好的美学装饰价值。为了进一步探究木材的美学原理,运用傅立叶变换图像处理技术对6种具有典型管孔分布类型的阔叶树材横切面构造进行了涨落谱分析。结果表明6种阔叶树材横切面构造的涨落谱都与1/f涨落谱相近,特别是在8-12Hz频率段(对应于人体大脑的α波段)与1/f涨落谱几乎完全一致。这一结果进一步从理论上说明阔叶树材之所以更适合于用作室内装饰装修材料,是因为其表面构造呈1/f涨落。木材表面构造上这种接近于1/f涨落现象可以刺激人体大脑产生α节律波,从而让人获得舒适愉悦的美感。

Hardwood is widely used as interior decoration materials, mainly because that its anatomical structure is in great complication and therefore it possesses good aesthetic decorative value. To further explore the aesthetic principles of wood, the fluctuation spectrum analysis was carried out on cross-section structure of six hardwood species with typical pore distribution patterns by means of Fourier image transformation technology. The results show that all the fluctuation spectra of cross-section structure of the six hardwood species were closely similar to l/f fluctuation spectrum, especially in the frequency bands of 8-12Hz （corresponding to the human brain＇s a-band） almost completely consistent with I/f fluctuation spectrum. This result further theoretically explains the reason why hardwood is more suitable as interior decoration materials lies in that its surface structure fluctuation is close similar to 1/ffluctuation. The wood surface structure fluctuation similar to I/f fluctuation can stimulate the human body to produce A-rhythm brain waves, and let people feel comfortable and pleasant.