A Method for Secure Communication Using a Discrete Wavelet Transform for Audio Data
Yuji Tsuda, Kouhei Nishimura, Haruka Oyaizu, Yasunari Yoshitomi, Taro Asada, Masayoshi Tabuse · Journal of Robotics Networking and Artificial Life · 2016
We developed a secure communication method using a discrete wavelet transform.Two users must both have a copy of the same piece of music to be able to communicate with each other.The music and the sender's message are encoded using the scaling coefficients obtained from a discrete wavelet transformation.The message receiver can produce the audio data similar to the sending user's speech using an inverse discrete wavelet transform, together with information on the difference between these two codes.