A Relative Phase Based Audio Integrity Protection Method: Model and Strategy

Table 2

The similarity between the original and recovered I.O. in audio processing experiments.

No.	Processing methods	Similarity
		Random embedding (RP-AIP)	0-coefficient embedding	n-coefficient embedding
		(a)	Original	1.00	1.00	1.00
(b)	Without processing	0.97	0.99	0.95
(c)	Smoothing/low-pass filtering	0.88	0.98	0.18
(d)	Band-pass filtering	0.90	0.85	0.84
(e)	MPEG-1 (with 10.5:1 ratio)	0.79	0.88	0.68
(f)	MPEG-1 (with 12:1 ratio)	0.81	0.85	0.64
(g)	A/D conversion	0.75	0.74	0.76