Authors
Kouhei Nishimura1, Yasunari Yoshitomi2, [email protected], Taro Asada2, [email protected], Masayoshi Tabuse2, [email protected]
1
Nippon Telegraph and Telephone West Corp., 3-15 Bamba-cho, Chuo-ku, Osaka 540-8511, Japan
2
Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Nakaragi-cho, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
http://www2.kpu.ac.jp/ningen/infsys/English_index.html

Available Online 30 September 2018.
DOI
https://doi.org/10.2991/jrnal.2018.5.2.4How to use a DOI?
Keywords
Secure communication; Audio data processing; Wavelet transform; Encoding
Abstract
We developed a secure communication method using a discrete wavelet transform. Two users must each have a copy of the same piece of music to be able to communicate with each other. The message receiver can produce audio data similar to the sending user's speech by using our previously proposed method and the given recording of music. To improve the accuracy of speaker authentication, the quantization level for the scaling coefficients is increased. Furthermore, the amount of data sent to the message receiver can be remarkably reduced by exploiting the characteristics of this data.

Copyright
Copyright © 2018, the Authors. Published by ALife Robotics Corp. Ltd.
Open Access
This is an open access article under the CC BY-NC license (http://creativecommons.org/licences/by-nc/4.0/).