The idle noise testing,noise source identification,reducing noise and sound quality optimization were performed on a four cylinder diesel engine.
针对高压共轨4缸柴油机进行了怠速噪声测试、噪声源识别、降噪以及声品质优化研究工作。
Research on Fuzzy Logic Chip for Engine Idle Speed Control;
用于电控发动机怠速控制的模糊逻辑芯片研制
Study and Optimization on Idle Noise and Sound Quality of Four Cylinder Diesel Engine
4缸柴油机怠速噪声及声品质优化研究
The Origin of Noises from Vehicle Transmissions and the Measures how to Lower Them
汽车变速器总成的噪声源及降噪措施
Prediction on the Vibration and Noise of High-Speed Train Structure and Research on the Noise Reduction Technology
高速列车结构振动噪声预测与降噪技术研究
Study on Analysis and Control of Noise for High-Speed Flexible Mechanisms;
高速柔性机构的噪声分析与控制研究
Research on Interior Noise Control of High-speed Maglev Train;
高速磁浮车的车内噪声控制计算研究
Fast Algorithm and Implementation of Multi-channel Active Noise Control;
多通道有源噪声控制快速算法及实现
The Investigation on the Rotor/Stator Interaction Noise with Subsonic Speeds
亚音速叶轮机械动静干扰噪声的研究
Research of Emission Noise Property of High-speed Railway Cars
高速铁道车辆辐射噪声特性初步研究
Design of novel programmable divider with high speed and low noise
新型高速低噪声可编程分频器的设计
Application of CAT technology on gearbox noise measurement
CAT技术在变速箱噪声测试中的应用
Rapid DOA estimation for nonuniform linear array in the presence of colored noise fields
色噪声下非均匀线阵的快速方位估计
An investigation of background noise measurement technology in aeroacoustic wind tunnel
低速航空声学风洞背景噪声测试技术研究
RESEARCH OF AERODYNAMIC NOISE SOURCE OF LOW SPEED AXIAL FANS BASED ON VORTEX-SOUND THEORY
基于涡声理论的低速轴流风机气动噪声研究
Noise Mechanism,Sound Source Localization and Noise Control of 350 km·h~(-1) High-Speed Train
350km·h~(-1)高速列车噪声机理、声源识别及控制
Numerical Analysis on Pneumatic Noise Sources on Surface of Streamline High-speed Train on Open-wire in Steady Flow Field
高速流线型车辆稳态下速度风噪声源数值分析
The Noise Source Identification and Control of Gearbox in the Test Bench of Auto Transmission
DCT变速器实验台增速箱的噪声源识别与控制
On the basis of analysing composition and testing results of noise generated by high speed punch press, the major noise sourse and the noise characteristics are pointed out.
在对高速冲床的噪声组成及其测试结果分析的基础上，指出了主要噪声源及噪声特性。
The Level with Pass-by Accelerating Noise of Great Model Passenger Accommodation Vehicle in Our Country and the Study of Decline Noise Measure
我国大型载客汽车的加速车外噪声水平及其降噪措施研究