A Study of MPEG-7 Based Singer Identification and Singing Evaluation
碩士 === 國立交通大學 === 電信工程研究所 === 102 === Unlike the conventional keyword-based searching mechanisms which rely heavily on the correctness of the given text, the content-based music information retrieval techniques that use only a small segment of music signals has gained popularity nowadays for their e...
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2014
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| Online Access: | http://ndltd.ncl.edu.tw/handle/47987594282521728693 |
| Summary: | 碩士 === 國立交通大學 === 電信工程研究所 === 102 === Unlike the conventional keyword-based searching mechanisms which rely heavily on the correctness of the given text, the content-based music information retrieval techniques that use only a small segment of music signals has gained popularity nowadays for their efficiency and accuracy. The main goal of this study is to identify whether a segment of unknown sound is from a specific singer in the database by using the MPEG-7 audio descriptor. The proposed scheme applies dimension reduction techniques on the MPEG-7 Audio Spectrum Envelope, thus obtain the corresponding Audio Spectrum Projection. Also utilized is the Audio Spectrum Centroid which improves the identification accuracy. Another issue addressed in this study is the singing evaluation, where the grading of each pieces of solo singing is carried out by changing Audio Spectrum Envelope into Chroma features and compare with MIDI melody pitch. MIDI-tone and Chroma feature scale conversion are conducted so as to compensate for the initial pitch difference of males and females. Moreover, Dynamic Time Warping is exploited to account for the differences in lengths.
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