直达声

多途信道的处理是通过镜面反射原理，把复杂的反射声简化为虚拟直达声的简单情况。

The disposing for the multi-channel is to convert the complex reflected sound to simply direct sound following the principle of specular reflection .

拖拉机驾驶室内噪声的测试与分析表明：拖拉机驾驶室内声场是由板壁振动辐射噪声形成的直达声场和直达声在壁面间反射形成的混响声场迭加而成。

The test result of interior noise of tractor cab shows that the interior noise in tractor cab is composed of direct sound and reverberation sound .

电教用房的室内声音包括直达声、前期反射声和混响声。

The indoor sound in audio-visual room consists of through sound , early reflex sound and the reverberations .

文中给出了一种零点约束条件下的干扰抑制方法，有效地解决了多址干扰和直达声干扰的抑制问题。

By using a least square method under zeros constrain , strong direct wave and multiple access interference are effectively solved .

提出考虑声线在各界面间进行扩散反射的计算机模拟新方法，从全局上考虑了声源对每一个接收点的直达声，以及整个界面对每个接收点的镜像和扩散反射声能。

A new computer simulation method considering diffuse reflection on room surfaces-hybrid method of image source model and diffuse surface integration is present .

而且老年人在言语掩蔽条件下对目标直达声和反射声进行知觉整合的最大有效延时小于年轻人的最大有效延时。

And the longest ITI at which a significant release from speech masking occurred is significantly shorter in old listeners than in young listeners .

直达声与混响声能比影响辅音清晰度损失率，从而影响语言清晰度。

The speech articulation is affected by the articulation loss of consonants which is impacted by the acoustic ratio of direct and reverberation sound .

在非对抗条件下，考虑到水声相干多途信道中发生反相叠加后产生漏报现象，对信号检测方法进行了改进，并采取分群开窗的方法选取信号的直达声。

In no antagonistic condition , to reduce the miss probability results from signal opposite-phase stacking in acoustic coherent multi-path channels , an algorithm of detecting signal is improved .

从理论上分析了钟型的线谱群的产生原因，证明了此现象是反射声和直达声之间的谱干涉引起的。

A theory analysis is made for a phenomenon of " line group " which is bell shaped , and the spectrum interference between direct path sound and reflected sound is revealed .