@inproceedings{f1adb2284a7149b49aad6845da8c4c90,
title = "Innovative audio mosaic technique by permutations",
abstract = "Smart assistants have been indispensable mechanisms on electronic devices nowadays. However, as smart devices become prevalent everywhere, eavesdropping attacks could be encountered. Hence, information security is very important. Lately, we proposed a new efficient cryptographic mosaic technique, namely efficient recoverable cryptographic mosaic technique by permutations, for image mosaicing. In this paper, we further extend this mosaic technique for audio signals. To evaluate the effectiveness of this new audio-mosaicing scheme, here we propose a new audio signal-discrepancy measure, namely KullbackLeibler divergence of spectrogram (spec-KLD). We also relate this spec-KLD measure to the well-known signal-to-noise ratio (SNR) by benchmarking the signal destructuring effect. We also present the audio-mosaicing results based on speech recognition by Siri to demonstrate that our proposed approach can greatly (successfully) destroy the speech intelligibility for information hiding. The intelligence loss of speech is also enumerated in terms of spec-KLD and SNR. ",
keywords = "Information hiding, Kullback-Leibler divergence (KLD), KullbackLeibler divergence of spectrogram (spec-KLD), Permutation, Recoverable cryptographic mosaic, Siri, Spectrogram",
author = "Sun, {Elaine Y.N.} and Wu, {Hsiao Chun} and Costas Busch and Huang, {Scott C.H.} and Kuan, {Yen Cheng} and Jonathan Wu",
note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 15th IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2020 ; Conference date: 27-10-2020 Through 29-10-2020",
year = "2020",
month = oct,
day = "27",
doi = "10.1109/BMSB49480.2020.9379882",
language = "English",
series = "IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB",
publisher = "IEEE Computer Society",
booktitle = "15th IEEE International Symposium on Broadband Multimedia Systems and Broadcasting, BMSB 2020",
address = "United States",
}