Multimedia Digital Audio Embedded Watermarking Algorithm Based on Mean Value
Compared with images or videos,audio is a continuously varying signal in the time domain,character-ized by higher dimensions and complexity.To effectively enhance the security of multimedia digital audio watermark-ing,this article presented a multimedia digital audio watermarking algorithm based on cepstral transformation.Firstly,an improved wavelet domain threshold filtering algorithm was employed to decompose the multimedia digital audio sig-nal.After the decomposition,cepstral transform was applied to the selected audio segments,thus obtaining the cepstral coefficients corresponding to each segment of the audio signal.Then,the mean value of the cepstral coefficients was calculated and quantized.Finally,the watermark was embedded in the multimedia digital audio using the modified cepstral coefficients.Extensive experiment results valid that the proposed method can withstand different types of at-tacks and effectively ensure the security of multimedia digital audio.
Cepstrum transformationMultimedia digital audioImproved wavelet threshold filtering algorithmCepstrum coefficient
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