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ファイル | 記述 | サイズ | フォーマット | |
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COMJ_a_00129.pdf | 1.52 MB | Adobe PDF | 見る/開く |
タイトル: | Automated Violin Fingering Transcription Through Analysis of an Audio Recording |
著者: | Maezawa, Akira Itoyama, Katsutoshi Komatani, Kazunori Ogata, Tetsuya Okuno, Hiroshi G. |
著者名の別形: | 奥乃, 博 |
発行日: | 14-Aug-2012 |
出版者: | MIT Press |
誌名: | Computer Music Journal |
巻: | 36 |
号: | 3 |
開始ページ: | 57 |
終了ページ: | 72 |
抄録: | We present a method to recuperate fingerings for a given piece of violin music in order to recreate the timbre of a given audio recording of the piece. This is achieved by first analyzing an audio signal to determine the most likely sequence of two-dimensional fingerboard locations (string number and location along the string), which recovers elements of violin fingering relevant to timbre. This sequence is then used as a constraint for finding an ergonomic sequence of finger placements that satisfies both the sequence of notated pitch and the given fingerboard-location sequence. Fingerboard-location-sequence estimation is based on estimation of a hidden Markov model, each state of which represents a particular fingerboard location and emits a Gaussian mixture model of the relative strengths of harmonics. The relative strengths of harmonics are estimated from a polyphonic mixture using score-informed source segregation, and compensates for discrepancies between observed data and training data through mean normalization. Fingering estimation is based on the modeling of a cost function for a sequence of finger placements. We tailor our model to incorporate the playing practices of the violin. We evaluate the performance of the fingerboard-location estimator with a polyphonic mixture, and with recordings of a violin whose timbral characteristics differ significantly from that of the training data. We subjectively evaluate the fingering estimator and validate the effectiveness of tailoring the fingering model towards the violin. |
著作権等: | © 2012 Massachusetts Institute of Technology. |
URI: | http://hdl.handle.net/2433/198554 |
DOI(出版社版): | 10.1162/COMJ_a_00129 |
出現コレクション: | 学術雑誌掲載論文等 |
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