Robust and Blind Audio Watermarking Algorithm in Dual Domain for Overcoming Synchronization Attacks

Table 4

Average BER (%) and NC of the extracted watermark under different processing operations.

Item	Attack	BER	NC	Item	Attack	BER	NC
A	64 kbps	1.28	0.9740	E	50 ms	0.00	1
	128 kbps	0.79	0.9854		100 ms	0.08	0.9985
B	20 dB	0.07	0.9987	F	4 kHz	25.64	0.7458
	30 dB	0.01	1		8 kHz	0.05	0.9990
	40 dB	0.00	1		12 kHz	0.00	1
C	Down	0.00	1	G	Reduce	0.72	0.9932
D	Down	0.70	0.9872		Enlarge	0.91	0.9876