Robust Digital Speech Watermarking For Online Speaker Recognition

Table 2

Comparison among different watermarking techniques in terms of objective (SNR), subjective (MOS) measurements, and capacity (bps).

Watermark techniques	MOS speech	Speech SNR (dB)	MOS music	Capacity (bps)
Robust DWPT-Multiplication	4.11	28.08	3.22	31.25–125
DWT-SVD	4.88	31.36	3.45	31.25
LWT-SVD	4.51	29.30	3.56	170.67
SVD-QIM	5	42.23	4.14	196

Efforts to understand the meaning scale were applied.
Quality scale was applied.