masking thresholds meaning in Chinese

掩蔽阈

Choose the frequency from 14 to 16 bark as the embedding positions which below the masking threshold . then change the dct coefficient with the certain strength of
选用中低频14 16bark段在掩蔽阈值以下的频率分量作为嵌入点,对该嵌入点的dct系数以一定嵌入强度作修改来实现秘密信息的嵌入。
The sinusoidal modeling based on matching pursuit is studied in this thesis , and the concepts of dynamic masking threshold and perceptual gradient are proposed as well as the algorithm of sinusoidal modeling with perceptual gradient
研究了基于匹配跟踪的正弦建模问题，提出了动态掩蔽阈值、感知梯度等概念，以及感知梯度正弦建模算法。
This thesis presents a new audio digital watermark algorithm based on has model . the steps : first , it classifies the signals through fft ; second , calculating the tones , noise and the overall masking threshold of different phases through has , and changing the energy value of tones which are more than that of the overall masking threshold to embed the watermark information
提出了一种基于人类听觉系统( has )模型的音频数字水印算法,该算法首先对信号进行分段离散快速傅立叶变换( fft ) ,再根据人类听觉系统模型计算出各段的类纯音、类噪音以及各段的总体掩蔽阈值,通过改变大于总体遮蔽阈值的类纯音的能量值来嵌入水印信息。