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Table 3 Robustness test analysis

From: Speech encryption using chaotic shift keying for secured speech communication

S.No Speech file Metric Proposed system in % Lima and Neto system [25] in %
Max Min Avg. Max Min Avg.
1. Audio1.wav NSCR 100 99.9982 99.9996 100 99.9967 99.9992
UACI 33.4161 33.1197 33.3066 33.4091 33.1850 33.2924
2. Audio2.wav NSCR 100 99.9999 99.9999 100 99.9973 99.9992
UACI 33.3893 33.1520 33.2714 33.4743 33.1931 33.3012
3. Audio3.wav NSCR 100 99.9998 99.9999 100 99.9961 99.9992
UACI 33.3990 33.1681 33.2683 33.4770 33.1858 33.3570
4. Audio4.wav NSCR 100 99.9997 99.9998 100 99.9967 99.9993
UACI 33.4371 33.2192 33.3218 33.4367 33.2030 33.3196