CT analysis of bowed stringed instruments
CT analysis of bowed stringed instruments
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DOI：
10.1148/radiology.203.3.9169708
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发表时间：
1997-06-01
期刊：
影响因子：
19.7
通讯作者：
Waddle, JR
中科院分区：
文献类型：
--
作者：
Sirr, SA;Waddle, JR
目得：要确定实用程序的计算机断层扫描（CT）的非侵入性评估弓stringed instruments.MATERIALS和METHODS：37仪器，从学生的仪器，精致的斯特拉迪瓦里小提琴的质量范围进行了分析与CT。厚度测量的准确性是从24个测量的横截面件锯从学生小提琴。密度测量的准确性确定从328 CT衰减测量的16个木材中使用的弦乐instruments.Results：显着差异的正常结构之间的杰作制作在克雷莫纳，意大利，和工厂生产的学生文书。在14台100年以上的乐器中，有9台发现了意想不到的缺陷，从几个虫洞（8台乐器）到许多虫洞和广泛的维修（一把小提琴）。CT厚度和衰减测量值与实际测量值的同一性线相关良好（P < .0001）。两个大提琴和一个中提琴已经从CT衍生的信息构建。中提琴在最近的一次国际比赛中获得金奖。结论：CT为现代制琴师和声学科学家提供了一种独特的工具，用于表征正常结构、缺陷和修复，以及精确测量木材厚度和密度。CT衍生的信息有助于复制原始杰作。CT评估可能在贵重弦乐器的估价、保险和鉴定中起重要作用。
PURPOSE: To determine the utility of computed tomography (CT) for the noninvasive evaluation of bowed stringed instruments.MATERIALS AND METHODS: Thirty-seven instruments that ranged in quality from student instruments to exquisite Stradivarius violins were analyzed with CT. Accuracy of thickness measurements was determined from 24 measurements of cross-sectional pieces sawed from a student violin. Accuracy of density measurements was determined from 328 CT attenuation measurements of 16 woods used in stringed instruments.RESULTS: Substantial differences of normal structure were noted between the masterpieces crafted in Cremona, Italy, and factory-produced student instruments. Unexpected defects were detected in nine of 14 instruments older than 100 years and ranged from a few wormholes (eight instruments) to many wormholes and extensive repair (one violin). CT thickness and attenuation measurements correlated well to the line of identity with actual measurements (P < .0001). Two cellos and a viola have been constructed from (CT-derived information. The viola was awarded a gold medal at a recent international competition.CONCLUSION: CT provides the modern luthier and acoustic scientist with a unique tool for characterization of normal structure, defects, and repair and for accurate measurements of wood thickness and density. CT-derived information aids in the replication of original masterpieces. CT evaluation may have an important role in the valuation, insurance, and identification of valuable stringed instruments.