For reducing the work noise, it is effective, to lower the work frequency.

为了减小工作噪音，降低工作频率是有效的。

youdao

Simulation results show the PLL clock frequency multiplier has lower phase noise and shorter capture time.

结果表明，PLL倍频器具有较低的噪声和较高的捕获速度。

youdao

The mechanism for low noise asphalt pavement to lower tyre noise is analyzed. A acoustical model is put forward. The resonance frequency of sound wave is analyzed with Helmholtz resonator model.

分析了低噪声沥青混凝土路面降低轮胎噪声的机理，建立低噪声沥青混凝土路面的声学模型，用亥姆霍兹共振器模型分析计算了声波的共振频率。

youdao

He added that the team did find that the presence of lower frequency elements in a song was predictive of whether a species' abundance would be affected by noise.

BBC: Traffic noise driving songbirds to the limit in cities