Thirdly, the paper has discussed the generation mechanism, acoustic model and the simulation model of the road noise on the basis of the tire pattern noise, and carried out the simulation analysis.
再次，在对轮胎花纹噪声研究的基础上，探讨了道路噪声的发声机理、发声模型及其仿真模型，并进行了仿真实验分析。
Due to the wide application of acoustic target recognition in civil and military aspects, it has been a hotspot of study for pattern recognition.
鉴于声目标识别在民用和军用方面的广泛应用，对声目标进行识别已成为模式识别领域中的研究热点之一。
Acoustic signal is stability and accuracy, so using acoustic signal to classify objects can expand the field of pattern recognition.
声信号具有稳定、精确的特点，使用声信号作为目标分类可以使模式识别的领域大大的拓宽。
Based on the theory of two-phase flow pattern of gas and liquid, gas cut change can be detected with acoustic wave after gas flowing into wellbore.
基于气体侵入井眼后按气液两相流型分布的原理，利用声波可以早期检测到气侵。
Based on the theory of two-phase flow pattern of gas and liquid, gas cut change can be detected with acoustic wave after gas flowing into wellbore.
基于气体侵入井眼后按气液两相流型分布的原理，利用声波可以早期检测到气侵。
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