一个高效的水印算法用于安全应用中的数字音频数据
Mohamed Yamni1, Achraf Daoui2, Hicham Karmouni2
1CED-ST, STIC, Laboratory of Electronic Signals and Systems of Information LESSI, Faculty of Science Dhar El Mahrez, University Sidi Mohamed Ben Abdellah, Fez, Morocco.
Scientific reports
|October 27, 2023
概括
本研究介绍了使用Raspberry Pi集群上的并行处理来实现更快的音频水标系统. 这种新的方法显著提高了实时应用程序的速度,提高了智能城市的安全性.
科学领域:
- 数字信号处理 数字信号处理
- 嵌入式系统 嵌入式系统
- 信息安全 信息安全
背景情况:
- 转换域音频水印提供了稳定性,但受到高计算成本的影响,限制了实时应用.
- 现有的方法通常对时间关键的安全需求来说太慢了,尤其是长时间的音频信号.
研究的目的:
- 为实时安全应用开发一个计算效率高,速度快的音频水印系统.
- 在嵌入式系统上利用并行处理来克服转换域水标的速度限制.
主要方法:
- 采用使用分数查理尔变换 (FrCT) 和双树复杂波量变换 (DTCWT) 的混合变换域.
- 密集的水标步骤并行并通过使用消息传递接口 (MPI) 在四个Raspberry Pi 4B设备的集群上实施.
主要成果:
- 并行系统实现了显著的时间改进:大约70%使用4个核心,80%使用8个核心,90%使用16个核心.
- 该系统展示了对操纵的稳定性,高有效载荷能力和高无感知度.
结论:
- 拟议的并行音频水印系统有效地解决了计算成本的挑战.
- 便携式和低功耗的Raspberry Pi集群可以为智能城市应用程序提供高效的实时水印.
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