Effects of Time and Frequency Resolution on Nonnegative Matrix Factorization
In this paper, we present the comparison of note events extraction using Nonnegative Matrix Factorization (NMF) with input from a classic Fourier Transform (FT) and with input from an improved time resolution FT. In order to improve time resolution, FT sample window length must be increased. As the...
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| Format: | Book Section |
| Language: | English |
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IEEE Xplore
2007
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| Online Access: | http://shdl.mmu.edu.my/3187/ http://shdl.mmu.edu.my/3187/1/Effects%20of%20Time%20and%20Frequency%20Resolution%20on%20Nonnegative%20Matrix%20Factorization.pdf |
| _version_ | 1848790258232066048 |
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| author | Sophea, Seng Phon-Amnuaisuk, Somnuk |
| author_facet | Sophea, Seng Phon-Amnuaisuk, Somnuk |
| author_sort | Sophea, Seng |
| building | MMU Institutional Repository |
| collection | Online Access |
| description | In this paper, we present the comparison of note events extraction using Nonnegative Matrix Factorization (NMF) with input from a classic Fourier Transform (FT) and with input from an improved time resolution FT. In order to improve time resolution, FT sample window length must be increased. As the window length increases, the time resolution is sacrificed for a better frequency resolution. Hence, good time and frequency resolutions are required in our polyphonic music transcription task. Here, we first apply Zero padding algorithm to classic FT to help maintain the time and frequency resolution. Then, we apply the hanning window. Finally we use NW to decompose the note events. The experiment shows that NW performs the decomposition of multivariate nonnegative data matrix well after applying the improved time resolution FT. |
| first_indexed | 2025-11-14T18:09:45Z |
| format | Book Section |
| id | mmu-3187 |
| institution | Multimedia University |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T18:09:45Z |
| publishDate | 2007 |
| publisher | IEEE Xplore |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | mmu-31872013-11-20T07:21:52Z http://shdl.mmu.edu.my/3187/ Effects of Time and Frequency Resolution on Nonnegative Matrix Factorization Sophea, Seng Phon-Amnuaisuk, Somnuk T Technology (General) QA75.5-76.95 Electronic computers. Computer science In this paper, we present the comparison of note events extraction using Nonnegative Matrix Factorization (NMF) with input from a classic Fourier Transform (FT) and with input from an improved time resolution FT. In order to improve time resolution, FT sample window length must be increased. As the window length increases, the time resolution is sacrificed for a better frequency resolution. Hence, good time and frequency resolutions are required in our polyphonic music transcription task. Here, we first apply Zero padding algorithm to classic FT to help maintain the time and frequency resolution. Then, we apply the hanning window. Finally we use NW to decompose the note events. The experiment shows that NW performs the decomposition of multivariate nonnegative data matrix well after applying the improved time resolution FT. IEEE Xplore 2007-11 Book Section NonPeerReviewed text en http://shdl.mmu.edu.my/3187/1/Effects%20of%20Time%20and%20Frequency%20Resolution%20on%20Nonnegative%20Matrix%20Factorization.pdf Sophea, Seng and Phon-Amnuaisuk, Somnuk (2007) Effects of Time and Frequency Resolution on Nonnegative Matrix Factorization. In: 2007 International Symposium on Information Technology Convergence (ISITC 2007). IEEE Xplore, pp. 203-207. ISBN 0-7695-3045-1 http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4410635 10.1109/ISITC.2007.49 10.1109/ISITC.2007.49 10.1109/ISITC.2007.49 |
| spellingShingle | T Technology (General) QA75.5-76.95 Electronic computers. Computer science Sophea, Seng Phon-Amnuaisuk, Somnuk Effects of Time and Frequency Resolution on Nonnegative Matrix Factorization |
| title | Effects of Time and Frequency Resolution on Nonnegative Matrix Factorization |
| title_full | Effects of Time and Frequency Resolution on Nonnegative Matrix Factorization |
| title_fullStr | Effects of Time and Frequency Resolution on Nonnegative Matrix Factorization |
| title_full_unstemmed | Effects of Time and Frequency Resolution on Nonnegative Matrix Factorization |
| title_short | Effects of Time and Frequency Resolution on Nonnegative Matrix Factorization |
| title_sort | effects of time and frequency resolution on nonnegative matrix factorization |
| topic | T Technology (General) QA75.5-76.95 Electronic computers. Computer science |
| url | http://shdl.mmu.edu.my/3187/ http://shdl.mmu.edu.my/3187/ http://shdl.mmu.edu.my/3187/ http://shdl.mmu.edu.my/3187/1/Effects%20of%20Time%20and%20Frequency%20Resolution%20on%20Nonnegative%20Matrix%20Factorization.pdf |