| 旷玮,姬培锋,杨军.笙的簧片物理参数与音色相关性的初步研究[J].,2016,35(6):494-504 |
| 笙的簧片物理参数与音色相关性的初步研究 |
| A study of the relationship between the physical parameters of Sheng reed and the timbre |
| 投稿时间：2016-03-01 修订日期：2016-10-24 |
| 中文摘要: |
| 为了改善笙的声音品质，本文研究了笙的簧片物理尺度与笙的音色之间的相关性。在提出笙的物理模型并验证其有效性的基础上，固定音高，改变簧舌的厚度、长度以及缝隙宽度，合成一组笙的声样本。通过对偶比较法以及多维尺度法分析笙的音色空间，根据簧舌参数及音色特征量解释该音色空间的物理意义，并从发声原理比较簧舌参数对音色的作用。结果表明，音高一定时，簧舌宽度对音色的作用可忽略，厚度（及长度）和缝隙宽度对音色的作用相似，但影响方式不同。改变簧舌物理参数所形成的二维音色空间与声音的对数起振时间、频谱丰富性以及频谱不规则度有关。起振特征与频谱丰富性特征存在共变关系，通过改变这两个特征，能够改变音色的明亮度和柔软度。 |
| 英文摘要: |
| The relationship between the physical dimensions of Sheng reed and the timbre of Sheng was studied to improve the sound quality of Sheng. A physical model of Sheng was proposed and validated. With this model, constant-pitched tones varying in the thickness, length and the slit width of reed tongue were synthesized. The perceptual timbre space was analyzed through paired comparison method and multidimensional scaling method. Its physical meaning was interpreted in terms of reed parameters and timbre descriptors. Moreover, the effects of reed parameters on the timbre were compared in mechanical perspective. The result showed that in constant pitch tones, the effect of the reed width on the timbre was negligible. While the thickness, length and slit width play similar roles in timbre perception but through different ways. The analyses revealed a 2-dimensional timbre space, whose dimensions were well correlated to the log attack time, the spectral richness and the spectral irregularity. The descriptors representing the attack and the spectral richness were covariant. By changing both, the softness and brightness of Sheng timbre could be modified. |
| DOI：10.11684/j.issn.1000-310X.2016.06.004 |
| 中文关键词: 笙，自由簧，音色，多维尺度分析，物理模型 |
| 英文关键词: Sheng, Free reed, Timbre, Multidimensional scaling, Physical model |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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