In Chap. 4, the equations for the intensity of sound and acoustic power were developed as if, due to fluctuations in the flow properties, there were a fluctuation in the quadrupole strength producing noise, but otherwise the quadrupole remained stationary in space. In this chapter, these are ...
UPS AND DINS: Pair will move in after jet noise is blocked out THE DUCHESS OF SHUSH-EX; Harry and Meghan spend PS50k on soundproofing; EXCLUSIVE Comfy Dreamer bed, bathroom with a good shower, I could see planes landing from the window with a little jet noise, but nothing obtrusive. Tr...
noise suppressor effect 噪声抑制器效应 mobile noise suppressor 活动消声器 atmospherics suppressor 大气干扰抑制器 echo suppressor 回波抑制器,回波阻尼器,回声抑制器,反射波抑制,反射抑制器 相似单词 suppressor n. 镇压者;禁止[删除] 者 JET JET 【缩写】 = Joint Engine Technology 【计算机】微软公司开...
- 《Journal of Sound & Vibration》 被引量: 23发表: 2006年 Modeling and Characterization of Incomplete Shielding Effect of GND on Common-Mode EMI of a Power Converter Common-mode (CM) electromagnetic interference (EMI) noise of a power converter is mostly due to the displacement current of ...
and D.T. Blackstock, "Finite‐Amplitude WaveEffects in Fluids," in Proceedings 1973 Symposium, Copenhagen (IPC Science and Technology, Guildford, England, 1974), pp. 24–29] showed that propagation distortion is significant for plane waves at sound pressure levels encountered in jet noise fields...
1)jet noise喷注噪声 1.Based on the model, the origination of a steam microjet noise and the noise emission behaviors were discussed.从理论上分析了蒸汽在水下有限空间内喷注时,喷注噪声的噪声源和辐射规律,发现水的过冷度对噪声的声压级和频率影响非常显著,这一发现已被随后的实验所证实。 2.Jet nois...
Airplane White Noises、Airplane Sound、Jet Cabin Noise 声乐 · 2023年 试听 歌曲 时长 1 Airplane Cabin Relaxation - with Passengers Sound 4:57 2 Airplane Cabin Jet Sounds for Sleeping, Passengers Sound 4:57 3 Plane Sound Effect, Passengers Sound ...
4) jet noise 喷流噪声 1. The effect of different nozzles on the jet noise is explored,such as chevron,lob,oblique and chevron&tab. 概述了当前国内外喷流噪声控制方法发展概况。 2. Screech is, so far, the least understood, least predictable component of supersonic jet noise. 啸音是超音速...
Design data for aircraft noise, which include the estimation of subsonic far-field jet mixing noise are presented. It is proposed to extend the existing far field jet mixing noise to supersonic jet velocity conditions. The theories which form the basis for jet exhaust noise prediction are summari...
The noise of a single-stream circular jet and that of a coaxial jet with coplanar nozzles of 2路5 area ratio have been measured under simulated flight cond... B.J.,Cocking - 《Journal of Sound & Vibration》 被引量: 6发表: 1977年 Static source locations for four nozzles mounted on ...