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Non-blind audio-watermarking using compression-expansion of signals

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Non-blind audio-watermarking using compression-expansion of signals
นักวิจัย : Foo, Say Wei
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2551
อ้างอิง : Foo, S. W. (2008). Non-blind audio-watermarking using compression-expansion of signals. In Proceedings of the IEEE Asia Pacific Conference on Circuits and Systems 2008: (pp.1288-1291). Nanyang Technological University, Singapore. , http://hdl.handle.net/10220/4672 , http://dx.doi.org/10.1109/APCCAS.2008.4746263
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : -
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

One of the advantages of non-blind watermarking scheme is that the original signal must be available to extract the watermark. As such, the possession of the original signal becomes important in the proof of ownership. In this paper, a non-blind audio-watermarking method is proposed. The method makes use of compression-expansion of adjacent frames of samples of the audio signal. Some frames of the signal are thus ‘modified’. The modified frames can be readily identified by comparing them with the original signal. The modified frames can be used to embed hidden information. By applying psychoacoustic model in the compression-expansion process, it is found that the modification does not affect the quality of the audio signal. The embedding of watermarks for single channel audio signal and two-channel stereo signals require different approaches which are described in detail in the paper. The performance of the method under several types of attacks is assessed. It is found that high percentage of recovery can be achieved with spectrally rich audio signals.

บรรณานุกรม :
Foo, Say Wei . (2551). Non-blind audio-watermarking using compression-expansion of signals.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Foo, Say Wei . 2551. "Non-blind audio-watermarking using compression-expansion of signals".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Foo, Say Wei . "Non-blind audio-watermarking using compression-expansion of signals."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2551. Print.
Foo, Say Wei . Non-blind audio-watermarking using compression-expansion of signals. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2551.