【摘 要】
:
针对现有的音频认证算法音频格式单一、算法不通用、认证效率低的问题,提出一种基于能零比的多格式音频感知哈希认证算法.该算法首先对待认证音频进行预处理、分帧和加窗,并
【机 构】
:
兰州理工大学计算机与通信学院,西北师范大学物理与电子工程学院,
论文部分内容阅读
针对现有的音频认证算法音频格式单一、算法不通用、认证效率低的问题,提出一种基于能零比的多格式音频感知哈希认证算法.该算法首先对待认证音频进行预处理、分帧和加窗,并计算每帧信号的短时能量和短时过零率,获得每帧信号的短时能量和短时过零率的比值;然后将获得的短时能量和短时过零率的比值作为音频信号的感知特征值;最后对感知特征值进行哈希构造,生成感知哈希序列.为提高算法的安全性,算法采用与哈希序列等长的密钥对哈希序列进行置乱.仿真结果表明:该算法对原始域和压缩域五种不同格式的音频内容都具有较好的鲁棒性和区分性,认证效率高.
Aiming at the problem that the existing audio authentication algorithm has single audio format, non-universal algorithm and low authentication efficiency, a multi-format audio perceptual hash authentication algorithm based on zero-ratio is proposed. The algorithm first processes the audio to be authenticated, And windowing, and calculates the short-time energy and short-time zero-crossing rate of each frame of signal to obtain the ratio of the short-time energy and the short-time zero-crossing rate of each frame of signal; and then obtains the short-time energy and short- As the perceived eigenvalue of the audio signal.Finally, the perceptual eigenvalue is hashed to generate the perceived hash sequence.In order to improve the security of the algorithm, the algorithm uses the same length as the hash sequence to set the hash sequence The simulation results show that this algorithm has good robustness and distinguishing ability to the audio content of the five different formats of the original domain and the compressed domain, and the authentication efficiency is high.
其他文献
本研究建立了优质亚基的AS-PCR标记体系,并对不同小麦品种进行了AS-PCR分析。利用RIL群体对小麦硬度、脂肪性状进行了QTL分析。主要结果如下:(1)小麦高分子量谷蛋白亚基1Dx5
Objectives: To analyze subtypes and quasi-species of isolatedviruses from HIV-1 infected individuals among the populationof Guangdong Province, for understandin
本研究选用甘蓝型油菜品种华杂62为试验材料,运用机械直播的方式进行播种,研究氮肥及密度、株行距配置以及不同收获时期对机械收获油菜产量及品质的影响。1.通过研究同一油菜品种在不同氮肥以及密度处理中的机械收获结果差异发现,机收总损失也随产量的增加而增加。施用氮肥越多损失率越高。实际生产中应适当提高油菜种植密度并降低氮肥施用量,采用“低肥高密”的种植模式,以此来获得分枝较整齐、株高适中、群体产量较高的适
水稻是最重要的粮食作物之一。在植物的生长发育过程中,乙烯和细胞分裂素起着很重要的作用,尤其在与环境刺激应答相关方面有重要的影响。本实验室在前期研究中,已将分别与乙烯和细胞分裂素有关的两个基因mETR(来自拟南芥的乙烯受体基因ETR1的突变基因)和Ipt(来自根癌农杆菌的细胞分裂素合成步骤中关键酶异戊烯基转移酶的编码基因)导入了一个水稻栽培品种广陵香糯中。本研究对已获得的转基因水稻进行了分子鉴定,并
Objective: To study the effect of traditional Chinese medicine antiviral capsules in the treatment of genital herpes.Methods: Using female guinea pig genital he
This study investigated the relationship betweenhuman papillomavirus (HPV) genotype and expression of p53and p21WAF1. Expression of p53 and p21WAF1 in 35 cases
Objectives: To directionally clone the omp1 gene fromChlamydia trachomatis (Ct) F genotype onto a plasmid vectorfor constructing a rudimentary DNA vaccine.Metho
Objective:To study the role of Th1fTh2 cytokines in the pathogenesis of recurrent genital herpes (RGH), and to better understand the relationship between them.M
Objective: To investigate the serotypes and auxotypesdistribution of Neisseria gonorrhoeae in Guangzhou.Method: 131 strains of Neisseria gonorrhoeae wereserotyp
文章以相关文献中出现的实例为依据,就其中存在的题名描述与检索的重复问题进行了分析,给出了更为妥当的处理方法。