| Presentation | 2015-11-13 A study of audio watermarking using non-negative matrix factorization Harumi Murata, Akio Ogihara, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Digital watermarking is a technique to embed another digital data into digital contents such as music, images, and videos. For audio signals, the sound quality of the stego signal should not deteriorate as much as host signal. With current methods, high sound quality means that the difference between the host and stego signals is small. We proposed a method with which high sound quality means that the sound quality of the stego signal is maintained as music even if another sound, except for host signal, is perceived. Accordingly, we use a sound with an instrumental timbre as the watermark signal. The sound quality of the stego signal does not produce an unpleasant feeling to the listener even if the watermark signal is perceived.Moreover, we use nonnegative matrix factorization (NMF). NMF is one of the technique used for separation of an audio mixture that consists of multiple instrumental sources. NMF is an algorithm that decomposes a nonnegative matrix that is an amplitude spectrogram of a target signal into two nonnegative matrices that corresponds to the spectral patterns of the target signal and the activation of each spectrum. Watermarks are defined using the elements of activation matrix and are embedded into host signal by adding watermark signals that have similar instrumental timbre. In this paper, we examine the validity of embedding method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Audio Watermarking / Non-negative Matrix Factorization |
| Paper # | EA2015-34,EMM2015-55 |
| Date of Issue | 2015-11-05 (EA, EMM) |
| Conference Information | |
| Committee | EA / EMM |
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| Conference Date | 2015/11/12(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kumamoto Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Multimedia Fusion, Content Processing, Multimedia Retrieval, Digital Watermarking, and Related Topics |
| Chair | Yoichi Haneda(Univ. of Electro-Comm.) / Akinori Ito(Tohoku Univ.) |
| Vice Chair | Yukio Iwaya(Tohoku Gakuin Univ.) / Mitsunori Mizumachi(Kyushu Inst. of Tech.) / Masashi Unoki(JAIST) / Masaki Kawamura(Yamaguchi Univ.) |
| Secretary | Yukio Iwaya(NTT) / Mitsunori Mizumachi(KDDI R&D Labs.) / Masashi Unoki(Univ. of Electro-Comm.) / Masaki Kawamura(Nagasaki Univ.) |
| Assistant | Shoichi Koyama(Univ. of Tokyo) / Motoi Iwata(Osaka Pref. Univ.) / Kazuhiro Kohno(Kansai Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Engineering Acoustics / Technical Committee on Enriched MultiMedia |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A study of audio watermarking using non-negative matrix factorization |
| Sub Title (in English) | |
| Keyword(1) | Audio Watermarking |
| Keyword(2) | Non-negative Matrix Factorization |
| 1st Author's Name | Harumi Murata |
| 1st Author's Affiliation | Chukyo University(Chukyo Univ.) |
| 2nd Author's Name | Akio Ogihara |
| 2nd Author's Affiliation | Kinki University(Kinki Univ.) |
| Date | 2015-11-13 |
| Paper # | EA2015-34,EMM2015-55 |
| Volume (vol) | vol.115 |
| Number (no) | EA-302,EMM-303 |
| Page | pp.pp.59-62(EA), pp.59-62(EMM), |
| #Pages | 4 |
| Date of Issue | 2015-11-05 (EA, EMM) |