According to the similarity between critical band of human auditory system and critical band wavelt transform,a watermark was embedded into the low-band and mid-band coefficients of digital wavelet. The embedding strength was adaptively controlled by the masking threshold.
根据人耳听觉系统的掩蔽效应,计算载体音频信号的掩蔽阈值,利用小波变换将掩蔽门限映射到小波系数中,然后将水印信号嵌入到中低频子波系数中,嵌入强度由掩蔽阈值自适应控制。
参考来源 - 基于听觉掩蔽效应和小波变换的数字音频水印Third we make detailed discussion on the method based on human auditory masking properties.
然后对基于人耳掩蔽阈值的语音增强方法作了讨论。
参考来源 - 实环境下的语音增强算法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
文中提出一种基于听觉掩蔽效应的音频数字水印算法，根据掩蔽阈值在DCT低频系数中嵌入水印。
Watermarking embedding algorithm based on auditory masking is proposed in this paper, which embeds watermarking based on masking threshold in low-band coefficients of DCT transformation.
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.
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