音乐合成领域相关问题的研究

发布时间：2018-04-16 08:24

本文选题：计算机仿真 + 音乐合成　；参考：《武汉纺织大学》2016年硕士论文

【摘要】：现如今,计算机仿真技术被越来越多地应用到了音乐领域,我们称其为音乐合成。随着国内外数字音乐市场需求的不断扩大,音乐合成领域的相关问题亟待解决。其中,音色特征值分析与提取技术是现阶段被研究的最多也是最为迫切的问题,是音乐合成领域的技术瓶颈。因此,对其进行研究有着十分重要的意义。本文在音乐的声学性状和波形音频技术基础上,对不加任何音色特征值的纯音进行合成,从而进一步提取出钢琴的“音色特征矩阵”,实现一种新的钢琴乐音特征提取方案。通过实验,本文得出以下几点结论:1.从纯音和复音的区别入手,创建可操作性更强的纯音合成技术路线,并在此基础上合成了只含有基频信号的单一正弦波乐音。2.利用MATLAB进行短时傅里叶变换,画出了钢琴乐音的频域波形图,从而可以非常直观的看到钢琴在仅弹奏一个键时的频域波形,得出了不同的乐器是建立在不同的倍频系统上的结论,由此才能使人记住并分辨出不同的乐器声。3.获得了各倍频点的相对振幅描述二维矩阵,由此判断出用矩阵提取振幅的方法比用函数进行建模的方法在表现钢琴音色时要更加优秀。4.对音色特征矩阵进行研究,发现了如若想要快速合成钢琴乐音,可以合成17个倍频谐波,这个数字既可以使得音色效果逼真,合成的速度又非常的快。本课题通过对音乐合成领域音色特征提取方案的改进,实现了对钢琴音色特征值的提取,仿真效果比较理想,可以运用于其他不同的乐器特征值提取中。
[Abstract]:Nowadays, computer simulation technology has been increasingly applied to the field of music, we called it music synthesis. With the digital music market demand continues to expand, the relevant issues in the field of music synthesis to solve. Among them, the timbre of eigenvalue analysis and extraction technology is currently being studied most is also the most urgent the problem is, technology bottleneck in the field of music synthesis. Therefore, research on it has very important meaning in this article. The music acoustic characters and waveform audio technology based on the synthesis of pure tone without any sound characteristic value, so as to further extract the piano timbre feature matrix, a new the piano music feature extraction method. Through the experiment, this paper draws the following conclusions: 1. from the difference between pure tone and polyphony of pure synthetic route to create stronger operability, and On the basis of the synthesis of baseband signal contains only single tone sine wave.2. short time Fourier transform using MATLAB, draw the map of piano music and frequency domain waveform, very intuitive to see the waveform in the frequency domain only play a key of the piano can be obtained, different instrument is based on the frequency doubling system on different conclusions thus, in order to make people remember and distinguish between different acoustic instruments.3. obtained relative amplitude of each frequency point description of two-dimensional matrix, from the modeling method than using function matrix to extract the amplitude of the method to more excellent.4. to study the characteristics of timbre in piano performance matrix, if we want to find the rapid synthesis piano music, can be synthesized 17 harmonic, this number can make the sound realistic effect, synthesis speed is very fast. Based on the study of music The improvement of the field timbre feature extraction scheme achieves the extraction of the piano timbre eigenvalue, and the simulation effect is ideal, which can be applied to other different musical instrument eigenvalue extraction.

【学位授予单位】：武汉纺织大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP391.9

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