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Characteristics of Rustling Sounds Created by the Structure of Polyester Warp Knitted Fabrics

机译：涤纶经编织物结构产生的沙沙声特性

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摘要

The rustling sounds of seven samples are recorded in order to determine the sound characteristics of polyester warp knitted fabrics according to construction type. Physical sound parameters (LPT, ΔL, Δf, ARC) and Zwicker's psychoacoustic parameters of loudness (z), sharpness (z), roughness (z), and fluctuation strength (z) are calculated from sound spectra obtained from FFT analysis. In addition, the KES-FB system is used to measure the mechanical properties. The sharkskin stitch fabrics have the highest LTP, Δf, ARC, loudness (z), and fluctuation strength (z) values, followed by the double denbigh and reverse locknit stitch fabrics. The open lap is louder, sharper, and has a larger fluctuation strength than the closed lap in stitch formation, LTP, Δf, ARC, loudness (z), roughness (z), and fluctuation strength (z) of the parallel direction have higher values than those in the counter direction in lapping formation between the back and front bar. Changes in the mutual guide bar movement from counter to parallel are more effective at making a warp knitted fabric's sound louder than the lapping form change from closed to open lap.
机译：记录七个样品的沙沙声，以便根据构造类型确定聚酯经编织物的声音特性。物理声音参数（LPT，ΔL，Δf，ARC）和Zwicker的响度（z），清晰度（z），粗糙度（z）和波动强度（z）的心理声学参数是根据FFT分析获得的声谱计算得出的。另外，KES-FB系统用于测量机械性能。鲨鱼皮针脚织物的LTP，Δf，ARC，响度（z）和波动强度（z）值最高，其次是双斜针和反向锁针针脚织物。与线圈形成时的闭合圈相比，开放圈更响，更锐利并且波动强度更大，平行方向的LTP，Δf，ARC，响度（z），粗糙度（z）和波动强度（z）更高。前后条之间搭接形成的比相反方向的值大。相互导杆从反方向移动到平行方向的变化，比使搭接形式从闭合到开放的搭接更有效，从而使经编织物的声音更大。

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