Speech Watermarking for Tampering Detection Based on Modifications to LSFs

Figure 8

Comparison of LP residues between the nonblind approach and the blind approach (LP order: th ; quantization step: ). (a) Waveform of the original signal, (b) residue of the original signal, (c) residue difference (original vs. nonblind), (d) waveform of the watermarked signal: embed “1,” (e) residue of the watermarked signal: embed “1,” and (f) residue difference (original vs. blind).

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