A Novel AMR-WB Speech Steganography Based on Diameter-Neighbor Codebook Partition

Table 1

MOS-LQO scores of the standard codec, CNV-based, NID-based, and our proposed steganography in four different rate modes and three embedding rates.

Embedding rate	Method	Rate mode (kbit/s)
		12.65	15.85	19.85	23.85
	Standard	2.929	3.073	3.199	3.269
100 bps	CNV	2.871	3.021	3.153	3.225
		NID	2.750	2.895	3.020	3.091
	Ours		2.864	3.010	3.139	3.216
		200 bps	CNV	/	/	/	/
	NID		2.601	2.736	2.875	2.921
			Ours	2.807	2.955	3.084	3.164
300 bps	CNV			/	/	/	/
	NID		2.284	2.386	2.475	2.533
		Ours	2.699	2.841	2.971	3.046