求翻译：赫姆霍兹共振噪声的最大特点是，其频率与发动机转速无关，但必须注意，共振频率随气缸工作容积而变，例如排气过程中随着活塞的上行，共振频率逐渐升高。因此，噪声频谱中对应于赫姆霍兹共振频率的波峰比较宽。是什么意思？

Helmholtz resonance maximum noise characteristics is that its frequency has nothing to do with the engine speed, but it must be noted that the resonance frequency of the cylinder with the volume of work and change, such as exhaust with the piston up the process, the resonant frequency gradually incr

Helms hodes resonance noise of the biggest feature is that its frequency with engine speed, but it must be noted that resonance frequency with cylinder working volume changes, such as exhaust in the course of the piston with uplink, resonant frequency is gradually increasing. Therefore, the noise sp

When the engine exhaust gate opens, the air cylinder and the exhaust passage, the exhaust pipe compose a Helmholtz wave resonant cavity, it has a resonance frequency.The waste gas flowing stimulates in the noise obtains the full enlargement with the resonance frequency consistent frequency ingredien

Helmholtz resonance noise of the biggest feature is that the frequency is independent of engine speed, but care must be taken, the resonance frequency change with working volume of the cylinder, and, for example exhaust process as the piston upward, rising resonance frequency. So corresponds to the

Helmholtz resonance noise of the biggest feature is that the frequency is independent of engine speed, but care must be taken, the resonance frequency change with working volume of the cylinder, and, for example exhaust process as the piston upward, rising resonance frequency. Therefore, noise frequ