1) holography sound cell
全息声元
1.
A new speech coding method called the holography sound cell encoding is introduced based on audio holography cell transformation.
引入了一种新的语音编码方法——全息声元编码,该编码技术将语音节分解为一个声元序列,其中每一个声元均包含原始语音节的主要信息,而全体声元则完全包含原始语音节的全部信息。
2) acoustic holography
声全息
1.
An experimental study on the distributed source boundary point method based nearfield acoustic holography;
基于分布源边界点法的近场声全息实验研究
2.
Wavelet based acoustic holography method for moving sound source identification;
基于小波分析的声全息识别运动声源的方法
3.
Application of data fusion to acoustic holography;
数据融合技术在声全息测量中的应用
3) Acoustical holography
声全息
1.
According to the holography reconstruction formula educed from Kirchhoff integral formula, this paper introduces the principle of near-field acoustical holography(NAH)in noise identification and reconstructs the acoustic field by a special arithmetic of dimensional frequency domain in order to reduce the quantity of calculation and improve the efficiency of reconstruction.
通过由基尔霍夫边界条件推出的全息重建公式,介绍了近场声全息法进行噪声源识别的原理,并利用空间频域算法对声场进行重建,大大减少了重建过程的计算量,提高了全息重建的效率。
2.
The production\'s principle and the recognition\'s methods of the noise in motorcycle has been deeply researched in this article and the key research has been done in acoustic intensity and the acoustical holography testing method.
论文深入研究了摩托车噪声产生的机理和噪声识别的方法,重点研究声强和声全息的噪声测试方法,并将二者结合,研究出基于优化声全息的声强法。
3.
The HELS method is applied in the practice due to its efficient computing and less measurements comparing with other acoustical holography algorithms.
Helmholtz方程最小二乘法和其他近场声全息方法一样都是针对平稳声场,对非平稳声场的分析很少。
5) sonic holography
声全息学
6) acoustic hologram
声全息图
补充资料：声全息术
20世纪60年代发展起来的一种成象技术。它的原理和全息照相相同，即利用波的干涉原理记录物波的振幅和相位，并利用衍射原理再现物体的象。它的不同之处是用超声波代替光波。声全息术的成象分辨率高。用于无损检验，可显示试件内部缺陷的形状和大小。
参考书目
B.P.Hidebrand and B.B.Brenden, An Introduction to Acoustical Holography，Plenum Press，New York,1972.
参考书目
B.P.Hidebrand and B.B.Brenden, An Introduction to Acoustical Holography，Plenum Press，New York,1972.
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