Developed cepstrum method for data extraction based on echo hiding
Developed cepstrum method for data extraction based on echo hiding
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发表时间：
2010
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通讯作者：
Y. Zhong
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作者：
Y. Zhong
本文提出了一种改进的基于回声隐藏的倒谱数据提取方法。该方法定义了一种新的回声定位准则，大大提高了数据提取的准确性。与传统倒谱方法不同的是，它引入了原始信号的倒谱值作为参考来确定新准则。该方法的数据提取准确性得到了提高利用新的倒谱准则对算法进行了改进，充分体现了改进算法的优越性，通过MATLAB仿真实验表明，新算法在回波衰减系数较小的情况下，仍能明显提高提取精度，且具有良好的稳定性。
A developed cepstrum method of data estraction based on echo hiding is proposed in this paper for data embedded within audio signal.A new criterion of echo location is defined and this new algorithm can greatly improve the accuracy of data extraction.What's greatly different from the traditional cepstrum is that the cepstral value of the oroginal signal is introduced in as a reference to help define the new criterion.The the accuracy of data extraction is improved by using the new cepstral criterion which makes the advantage of the developed algotithm clear.Large numbers of simulation experiments in MATLAB show that the new algotithm can obviously improve the accuracy even though the echo attenuation coefficient is small.What's more,the new algorithm has a good stability.