摘要
传统用于声音压缩编码的掩蔽效应模型是在单一听觉模式下获得的,而现今的多媒体技术是视听交互模式。在有视觉刺激情况下,人耳声音的掩蔽特性是否会发生变化？为了研究视觉刺激对听觉掩蔽效应的影响,从视觉与听觉心理的相互关联性入手进行了窄带噪声掩蔽纯音和宽带噪声掩蔽纯音两类心理声学实验。实验采用恒定刺激法,在听觉判断的同时给被试呈现三种不同提示状态的视觉刺激,对在200~7700Hz的频率范围内的噪声掩蔽阈值进行实验测定,并将结果与无视觉状态的实验结果相比较。对实验结果进行了信度检验、效度分析和显著性分析之后,利用相关视觉提示促进理论和注意能量分散理论对实验结果进行了理论解析。
The traditional auditory masking model used for audio coding is achieved in audio-only mode,but the mul-timedia technology is actually in visual-auditory interaction mode.Whether does the auditory masking model change with the visual stimulation？ In order to study the influence of visual stimulation on auditory masking,this paper carried out two types of psychoacoustic experiments including narrow-band noise masking and broad-band noise masking.The method of constant stimuli is used in experiments with the frequency range from 200Hz to 7700Hz.Three kinds of visual stimulation are presented to the subjects respectively,and the experiment results are compared with that of audio-only mode.Then reliability of the results is discussed.Finally,this paper tries to explain the results by using the theory of correlative visual cue promotion and the theory of attention energy dispersion.
出处
《声学技术》
CSCD
2010年第4期400-405,共6页
Technical Acoustics
基金
国家自然科学基金项目(10604050)
关键词
掩蔽效应
视听交互
视觉刺激
masking effect
visual-auditory interaction
visual stimulation
