Dual Key Speech Encryption Algorithm Based Underdetermined BSS

Table 2

SNR (dB) of two original signals segments in two encrypted segments and two decrypted signals segments.

Original signals segments	Encrypted signals segments		Decrypted signals segments
	𝑥1	𝑥2	𝑠1̂	𝑠2̂
𝑠1	81.4021	65.5826	−94.595	1.0563
𝑠2	105.586	89.7596	25.2364	−101.7182