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博碩士論文 etd-0627116-132348 詳細資訊
Title page for etd-0627116-132348
論文名稱
Title
衡量網路吉他和弦譜之研究
A Study on Measuring Online Guitar Chord Tabs
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
60
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2016-07-08
繳交日期
Date of Submission
2016-07-27
關鍵字
Keywords
品質分析、吉他譜、相似度指標、動態時間規劃、和弦序列
quality analysis, chord tab, similarity index, chord sequence, Dynamic Time Warping
統計
Statistics
本論文已被瀏覽 6030 次,被下載 144
The thesis/dissertation has been browsed 6030 times, has been downloaded 144 times.
中文摘要
由於近年來提供吉他譜的相關網站和電子資料庫增多,且網站內使用者所上傳譜的格式、調性與歌曲結構並不一致,如此一來造成同首歌但有許多不同的版本,雖然大部分網站能有星等來讓使用者評量譜的品質,但利用評等紀錄無法適用在冷門和不流行的歌曲上面,為了解決此現象並減少人力檢查的耗費,本篇論文將利用譜內的和弦序列與原曲的和弦序列計算相似程度,利用此相似度指標,對於 346首歌中挑選出來的 1633張譜做關聯性分析。在實驗中發現,星等與相似度指標有顯著正相關(大於0.3),此結果須將欲比較的兩序列轉為同個調性,而我們也發現動態時間規劃演算法能適應於兩和弦序列時間上與速度上不同的比較,相較於其他和弦相似計算方法更能有效計算兩段和弦序列的相似程度。本論文所提出的相似度指標能自動地反映出與原曲的相似性,能協助確認和弦的品質以及建立將音樂訊息納入考量的推薦系統。
Abstract
Due to the explosion of music tabs sharing websites, user can upload chord tabs with different key, structure, and format. As a result, there could be many tabs versions associated with one song, causing confusions to the users when it comes to choosing a tab. In order to solve this problem and ease labor cost to check, in this research we develop a similarity index that measures the similarity between a chord tab and its tonal progression of the original song, which may serve as the quality indicator of the tab. The proposed index requires the processing of chord tab, followed by Dynamic Time Warping(DTW) for computing the similarity between two chord sequences. Our experiment involves 1,633 chord tabs of 346 songs. We find that the proposed index values of chord tabs have positive correlation with the rank given by users (above 0.3) when comparing two chord sequences on the same key. We also find dynamic time warping (DTW) outperforms other similarity calculation methods, since DTW can compare two sequence varied in time and speed. The proposed similarity index can be used in determining the qualities of tabs as well as building chord tab recommendation system.
目次 Table of Contents
Chapter 1 Introduction + 1
1.1 Background + 1
1.2 Motivation + 2
Chapter 2 Literature Review + 4
2.1 Chord Sequence + 4
2.2 Music Similarity Measurement + 7
2.3 Other Tab Analysis Researches + 12
Chapter 3 The Approach + 14
3.1 System Architecture of the Approach + 14
3.2 Datasets + 15
3.2.1 Crawler for Ultimate Chord tabs + 15
3.2.2 NNLS/Chordino package + 16
3.3 Pre-Processing of Chord Sequences + 17
3.3.1 Reduction of Chord Vocabularies + 17
3.3.2 Find Global Key of Each Song + 19
3.3.3 Key Smoothing + 21
3.4 Similarity Function + 22
3.4.1 Chord Likeness Function + 22
3.4.2 Dynamic Time Warping with Cost Function + 23
3.4.3 Chord Sequence Similarity + 26
Chapter 4 Experiment + 27
4.1 Our Experiment Dataset + 27
4.2 Evaluate Correlation + 29
4.2.1 Correlation Test for USPOP2002 + 29
4.2.2 Correlation Test for Extent Data + 31
4.2.3 Investigate into Kendall Tau-b analysis + 31
4.3 Comparing with Other System + 33
Chapter 5 Conclusion + 36
References + 38
參考文獻 References
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