一种基于IFS分形算法和分解和弦的耳鸣康复音合成新方法

发布时间：2018-02-16 18:57

  本文关键词： 耳鸣 习服治疗 IFS算法 分形 分解和弦　出处：《四川大学学报(自然科学版)》2017年03期 　论文类型：期刊论文

【摘要】：耳鸣是在无外界声源刺激下的一种主观感知,在临床上十分常见.习服治疗是目前公认的一种有效的耳鸣治疗方法.研究表明,具有相似却又不重复的分形音乐可以作为耳鸣习服治疗的治疗声源.本文提出了一种基于IFS(Iterated Function System)分形算法和分解和弦的耳鸣康复音合成新方法,该方法将分形图形处理技术运用到耳鸣康复音的合成中,使得生成的音符整体在可控范围内随机出现,并且相邻音符在可调节的范围内波动,可有效的避免音调突变现象.此方法保留了图像信号中的分形特征,实现了可控范围内的确定性与可预测性的统一;在加入了分解和弦后,音乐更加连贯.试听结果表明,该耳鸣康复音具有相似不重复、流畅且突变少的特点,对耳鸣治疗有一定的参考价值.
[Abstract]:Tinnitus is a kind of subjective perception without external sound source, which is very common in clinic. Acclimatization therapy is an effective method of tinnitus treatment. Fractal music, which is similar but not repeated, can be used as a therapeutic sound source for tinnitus acclimation therapy. This paper presents a new method of tinnitus rehabilitation sound synthesis based on IFS(Iterated Function system fractal algorithm and decomposed chord. In this method, fractal graphics processing technology is applied to the synthesis of tinnitus rehabilitation sound, which makes the generated notes appear randomly in controllable range, and the adjacent notes fluctuate in adjustable range. This method preserves the fractal feature in the image signal and realizes the unity of certainty and predictability in controllable range. The music is more coherent with the addition of decomposed chords. The audition results show that, The convalescent tone of tinnitus has the characteristics of similar non-repetition, fluency and less mutation, so it has certain reference value for tinnitus treatment.
【作者单位】： 四川大学电子信息学院;
【基金】：四川省科技支撑项目(2011SZ0123);四川省科技支撑项目(2013GZ1043)
【分类号】：R764.45;TN912.33
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本文编号：1516211