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理學院
資訊工程學系
學位論文
學位論文
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/73912
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search.filters.author.張書堯
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search.filters.author.Chang, Shu-Yao
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search.filters.subject.computer composition
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search.filters.subject.Markov model
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search.filters.subject.Music variation
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search.filters.subject.probabilistic model
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search.filters.subject.機率模型
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自動風格轉化之節奏變奏 – 以流行樂為例
(
2017
)
張書堯
;
Chang, Shu-Yao
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電腦編曲是被研究已久的題目,累積了相當多的研究方法,其中電腦變奏因其多變性,至今沒有一套系統能夠解釋所有的變奏,因此找出音樂變奏的通則成為一項艱鉅的挑戰。在變奏方法不唯一的情況下,此論文根據樂理提出一個方法,我們考慮作曲家創作的手法,採用最小重複單位。而節奏的最小重複單位為動機或主題,但因為存在計算誤差,加上考慮現代音樂節奏多採用相似並帶有變化性重複, 因此採用小節作為重複的基礎單位。我們觀察節拍之間轉移的機率和小節之間的轉移機率,建立了馬爾可夫模型,計算在輸入音樂節奏的結構框架限制下,找出最合適的節奏片段作為節奏變奏。
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