优化宽频带波阻抗模型 optimized broad-band impedance model
依据听觉掩蔽模型计算每个临界频带的掩蔽阈值，再根据水印嵌入点处的掩蔽阈值和音频载体值的大小共同控制量化步长。
Calculating masking threshold of every critical band by auditory masking model, then quantization steps are controlled by masking threshold and value of audio carrier of the embedding points.
由于水印被冗余地嵌入在模型的整个频带上，该算法可有效地抵抗多种攻击。
Because the watermark is embedded redundantly in the whole band of the model, the approach is robust against various attacks.
摘要提出了基于临界频带率、依赖于强度的扩展函数、非线性迭加和前向掩蔽效应的参数心理声学模型。
A parametric psychoacoustic model based on critical band rate, level - dependent spreading function, non - linear superposition and forward masking was proposed.
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