Speech Encryption Algorithm Based on Nonorthogonal Quantum State with Hyperchaotic Keystreams

Table 4

Encrypted signal numerical analysis.

Sample files		Correlation
. Male voice	−12.45 dB	0.00669
. Female voice	−13.89 dB	0.00918
. Male voice	−21.89 dB	0.00693
. Female voice	−14.32 dB	0.00229
. Male voice	−22.89 dB	0.00527
. Female voice	−19.45 dB	0.00358
. Male voice	−11.76 dB	0.00992
. Female voice	−23.23 dB	0.00136