| 講演名 | 2015-03-13 Study on Watermarking for Digital Audio Based on Adaptive Phase Modulation , |
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| PDFダウンロードページ |  PDFダウンロードページへ |
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| 抄録(英) | This paper proposes a novel blind watermarking method for digital audio based on adaptive phase modulation. Audio signals are usually non-stationary, i.e., their own characteristics are time-variant. The features for watermarking have not been selected by combining the principle of variability, which affects the performance of the whole watermarking system. The proposed method embeds a watermark into an audio signal by adaptively modulating its phase with the embedded bit '0' or '!' using two all-pass filters. The frequency location of the filter pole-zero which characterizes the transfer function of the filter is adapted to distribution of signal power spectrum. The filter pole-zero locations are adapted in such a way that phase modulation causes the least distortion in watermarked signals to achieve the best sound quality. The experimental results show that the proposed method could embed inaudible watermark into various kinds of audio signals and correctly detect watermark without the aid of original signals. The proposed method has the ability to embed watermark into audio signals up to 150 bits per second with the bit error rate of less than 10%. |
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| キーワード(英) | audio watermarking / blind detection / adaptive phase modulation / all-pass filter |
| 資料番号 | EMM2014-102 |
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| 研究会情報 | |
| 研究会 | EMM |
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| 開催期間 | 2015/3/5(から1日開催) |
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| 申込み研究会 | Enriched Multimedia (EMM) |
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| 本文の言語 | ENG |
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| タイトル（英） | Study on Watermarking for Digital Audio Based on Adaptive Phase Modulation |
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| キーワード(1)（和/英） | / audio watermarking |
| 第 1 著者 氏名（和/英） | / Nhut MINH NGO |
| 第 1 著者 所属（和/英） | School of Information Science, Japan Advanced Institute of Science and Technology |
| 発表年月日 | 2015-03-13 |
| 資料番号 | EMM2014-102 |
| 巻番号（vol） | vol.114 |
| 号番号（no） | 511 |
| ページ範囲 | pp.- |
| ページ数 | 6 |
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