1) auditory masking threshold
听觉掩蔽阈值
1.
In this algorithm,both the psychoacoustic model and the auditory masking threshold are used to determine the embedding positions of watermarking for the purpose of ensuring the imperceptibility of watermarking,the synchronization code is embedded in the audio signal in time domain to withstand synchronous attacks,and the audio signal is segmented and the watermar.
该算法基于心理声学模型,并利用载体听觉掩蔽阈值选择嵌入位置,以保证水印的隐藏性;同时,在时域嵌入同步码以抵制同步攻击;最后,将音频载体进行分段,在每段音频中自适应嵌入水印,并在每个段首嵌入段号以区别不同音频段。
2) hearing masking
听觉掩蔽
1.
Which this article formulates is divided into 3 parts: hearing masking, equal loudness and property of cochlear frequency-division.
本文研究的内容是基于人耳听觉特性的语音特征提取方法,主要分为三个部分:听觉掩蔽特性、等响特性以及耳蜗分频特性。
3) auditory masking
听觉掩蔽
1.
A speech enhancement algorithm based on auditory masking and multi-band spectral subtraction
基于听觉掩蔽效应的多带谱减语音增强算法
2.
This paper presents an audio watermarking algorithm in DCT domain based on human auditory masking properties.
文中提出了一种基于听觉掩蔽效应的DCT域音频水印算法。
3.
This paper suggests an improved speech enhancement method based on human auditory masking properties.
该文利用人耳感知的掩蔽特性,研究了一种改进的基于人耳听觉掩蔽特性的语音增强方法。
4) human auditory masking
听觉掩蔽
1.
A new speech enhancement based on human auditory masking;
听觉掩蔽效应语音增强的改进算法
2.
Speech enhancement based on Hilbert-Huang tansform and human auditory masking
基于Hilbert-Huang变换和听觉掩蔽的语音增强算法
5) masking properties
听觉掩蔽
1.
MMSE speech enhancement algorithm based on masking properties;
基于听觉掩蔽效应的MMSE语音增强算法
6) masking threshold
掩蔽阈值
1.
Digital audio watermarking algorithm based on masking threshold and complex cepstrum;
基于掩蔽阈值与复倒谱的数字音频水印算法
2.
Choosing the frequency from 14 to 16 Bark as the embedding positions which is below the masking threshold,this paper changes the DCT coefficient with the certain strength of the embedded which is determined by the statistic of the DCT coefficient.
文中选用中低频14~16Bark中,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。
3.
The masking threshold for each audio signal segment is calculated on the basic psychoacoustic model,watermarking is embedded by quantizing DCT low-band and mid-band frequency coefficients of digital audio signal.
提出一种基于听觉掩蔽效应和量化的DCT域音频水印嵌入方案,根据人耳的生理听觉特性,计算音频信号的掩蔽阈值对获取的中低频系数量化后嵌入数字水印图像,量化步长由掩蔽阈值自适应控制,并且水印的提出和检测都不需要原始数字音频信号的参与。
补充资料：听觉掩蔽
听觉掩蔽
auditory masking
听觉掩蔽(aud，tory masking)两个声音同时呈现，对1个声音的听觉因受另一个声音的影响而减弱的现象。声音的掩蔽有二种:一种是纯音对纯音的掩蔽。实验研究表明:(l)掩蔽音的强度提高，掩蔽效果随之增加并掩蔽范围也加大。(2)掩蔽音对于频率相近的被掩蔽音的掩蔽效果最大，但此时要防止拍音的产生，若产生拍音，反而会降低掩蔽效果。(3少低频对高频的掩蔽效果大于高频对低频的掩蔽效果。另一种是噪音对纯音的掩蔽。一般掩蔽音采用白噪音。’实验研究表明:当噪音强度低时，各种纯音的闽限差别大，当噪音强度提高时，各种纯音的阐限差别缩小。另外，白噪音中以被掩蔽的纯音频率为中心的一个窄带，掩蔽效果最好。第王种是噪音或纯音对语言的掩蔽。总之，噪音和纯音都可对语言造成干扰，使语言变得不可理解。实验研究表明:噪音比纯音掩蔽语言的效果更大，噪音的强度愈大，掩蔽效果愈明显 (金志成撰林仲贤审)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条