CAJ | 학술논문

提出了一种将秘密语音隐藏到载体语音的新方法,并引入 Logistic 混沌映射,利用混沌序列对秘密语音信息进行处理.算法根据人耳对音频倒置不敏感和音频幅度值为正的采样点在总采样点中所占的比例比较稳定的特点,通过倒置的方法调整该比例的大小嵌入秘密信息.实验表明,含有秘密信息的混合语音不仅具有良好的不可感知性,而且对诸如噪声、低通滤波、重采样等攻击具有良好的鲁棒性.
제출료일충장비밀어음은장도재체어음적신방법,병인입 Logistic 혼돈영사,이용혼돈서렬대비밀어음신식진행처리.산법근거인이대음빈도치불민감화음빈폭도치위정적채양점재총채양점중소점적비례비교은정적특점,통과도치적방법조정해비례적대소감입비밀신식.실험표명,함유비밀신식적혼합어음불부구유량호적불가감지성,이차대제여조성、저통려파、중채양등공격구유량호적로봉성.
This paper proposed a kind of new approach of hiding speech into the audio carrier. Utilized Logistic chaotic map as chaotic sequence to process the secure speech. Based on the features that audio sample dots inversion had little influence on the human hearing and that the percentage of the positive audio sample dots in a period of time was robust against some audio attacks, embedded the secret information to the audio by adjusting the percentage of the positive audio sample dots. Realized the adjustment by inversing audio sample dots. Experiment results show the speech which is embedded with secret information has good imperceptibility,and the algorithm is strongly robust to many attacks, such as