Research Article

A Noise-Tolerant Audio Encryption Framework Designed by the Application of S8 Symmetric Group and Chaotic Systems

Figure 7

Spectrogram of original Audio 1 and Audio 2 and encrypted Audio 1 and Audio 2. (a) Audio 1, (b) encrypted Audio 1, (c) Audio 2, and (d) encrypted Audio 1.
(a)
(b)
(c)
(d)