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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