多带抗噪声语音识别算法研究

根据Flether等人的研究,基于感知独立性假设的子带识别方法被用于抗噪声鲁棒语音识别。本文拓展子带方法,采用基于噪声污染假定的多带框架来减少噪声影响。论文不仅从理论上分析了噪声污染假定多带框架在识别性能上的潜在优势,而且提出了多带环境下的鲁棒语音识别算法。研究表明：多带框架不仅回避了独立感知假设要求,而且与子带方法相比,多带方法能更好的减少噪声影响,提高系统识别性能。     

听觉盛宴 BANG＆OLUFSEN BEOLAB 9

丹麦顶级影音设备制造商Bang＆Olufsen的产品向来以杰出的声音表现和标新立异的造型闻名于世，而这对BeoLab9更是历经了两年的精心设计才完成的又一精品。     

High 翻你的听觉神经

清晨的大自然纯音让你的耳朵伸个懒腰，上班时有交响乐一路相伴，午休空隙偷懒听一曲最新单曲，或者一段Hit—pop叫醒瞌睡的眼皮，傍晚时分的柔美情歌触动你的灵魂，深夜一曲轻Jazz和着红酒催眠你的忧伤。有精美MP3相伴，听觉幸福别无他求。     

Frequency Selectivity Behaviour in the Auditory Midbrain： Implications of Model Study

By numerical simulations on frequency dependence of the spiking threshold, i.e. on the critical amplitude of periodic stimulus, for a neuron to fire, we find that bushy cells in the cochlear nuclear exhibit frequency selec- tivity behaviour. However, the selective frequency band of a bushy cell is far away from that of the preferred spectral range in human and mammal auditory perception. The mechanism underlying this neural activity is also discussed. Further studies show that the ion channel densities have little impact on the selective frequency band of bushy cells. These findings suggest that the neuronal behaviour of frequency selectivity in bushy cells at both the single cell and population levels may be not functionally relevant to frequency discrimination. Our results may reveal a neural hint to the reconsideration on the busily cell functional role in auditory information processing of sound frequency.     

以两种建伍扬声器系统为例研讨重视中音域的设计及圆筒状图形测试与听感之

作者系日本建伍公司的产品开发人员，介绍了在开发ＬＳ－Ｍ７、ＬＳ－Ｘ９这两种扬声器系统及其所用单元时是如何从重视中音域出发来采取措施的。对中音单元以圆筒状图形表达的音响空间特性实测和对系统的４００Ｈｚ声压分布实测都给出了比以前有明显改善的结果。     

关于《集结号》

关于片名 很难想象一部关于60年前战争题材的作品,如果仍用<官司>的原著小说名,会否也能把票房号角吹得这么响.人对文字的某种视觉、听觉等意象感受很微妙,这种微妙直接关系到你对审美对象的评判.     

厅堂音质的听觉化模拟技术

厅堂音质的听觉化模拟技术是计算机技术、室内声学、电声技术相结合的双耳听觉化模拟技术，是新一代的厅堂音质ＣＡＤ技术的关键。同时听觉化模拟技术也为未来新的立体声制式的出现提供了可能性，这对未来的数字立体声广播、多媒体广播都可能产生巨大的潜在影响。本文对此项技术的原理、声场模拟、听演化实现过程、软件研究及应用前景等作了简要的介绍。     

耳蜗力学研究进展

耳蜗力学是听觉科学和生理声学研究的核心话题,同时也是一个极具代表性的生物力学话题. 深入总结和揭示耳蜗力学特性能够推动相关问题的深入研究和促进心理声学的发展与应用. 该文分宏观力学和微观力学两部分进行综述,然后结合近几年的研究动态,总结耳蜗力学的发展趋势和应用前景. 表明耳蜗作为一个杰出的频率选择和高灵敏度的声信号感应器官,可以对20~20 000 Hz 这样跨度达千倍的频率做出精确响应,且刺激信号可以放大4 000 倍以上.     

超磁致伸缩材料在骨传导听觉装置上的应用

超磁致伸缩材料(简称GMM)是制作低频换能器的理想功能材料。介绍了GMM的磁致伸缩机理及其本身特性;与传统磁致伸缩材料以及当前广泛应用在骨传导听觉装置上的电磁和压电材料进行了分析比较;综述了GMM在骨传导听觉装置上的应用现状;重点介绍了骨传导发音振子的设计构想,并且对超磁致伸缩式骨传导听觉装置在军事通信上的应用进行了展望。     

Optimized sub-band adaptive AEC using ear auditory feature

Acoustic echo cancellation based on sub-band filters has the characteristics of rapid con- vergence and small computational complexity. This letter analyses two different sub-band filters design methods which used in acoustic echo cancellation fields and compares them with each other. Fur- thermore, the sub-band filter construction have been optimized, which lead to the improvement of the computational efficiency. At the same time, this letter combines ear auditory feature with acoustic echo cancellation, thus improves the original algorithms by importing a new objective function creatively. At the last part, a simulation environment has been designed and a computer simulation has been carried out. The final results indicate that this method can meet the requirements of actual projects, and some improvements are demonstrated on performance and calculation quantity compared to original algo- rithms.