摘要
声音畸变是电吉他音乐最重要的特性之一,对电吉他增加畸变后的音色的描述是目前的研究热点.笔者利用实验手段研究了不同畸变后得到的音色差别与从震源信号的自相关函数中提取出来的物理因子的关系,并利用自相关函数Φ(0)定义了一个因子W_(Φ(0)).在利用模拟声音畸变进行的实验中,发现W_(Φ(0))因子可以较好地描述声音的畸变,同时,音色的差别与W_(Φ(0))的平均值有较强的相关关系.另一项采用商业化效应器进行的实验也得到了类似的结果,这表明音色差异与W_(Φ(0))的均值之间也有强的相关关系.
The ＂distortion＂ of electric guitar, which is one of the most important characteristies of music, is foeused on describing timbre. This paper experimentally investigates the relationship between the dissimilarity representing the difference in timbre with different distortions and the physical factors extracted fiom the autocorrelation function of the source signal. A faetor WΦ（0） is defined by the width at 0.5 crossing of the normalized autocnrrelation function, Φ（0）. in the experiment with simulated distortion, it is found that the factor WΦ（0） well describes the distortion. At the same time, a high eorrelation between the dissimilarity and the mean value of WΦ（0） was shown. Another experiment performed similarly using commercial effectors also shows the high correlation between the dissimilarity and the mean value of WΦ（0）.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第B10期96-99,共4页
Journal of South China University of Technology(Natural Science Edition)
关键词
电吉他
音畸变
音色
electric guitar
distortion
timbre
作者简介
花田健吾（1983-），男，硕士，主要从事吉他信号的物理和心理分析．E-mail：hanabeat0202@yahoo．co．jp
