A Study on the Analysis of Automobile Suddenly using an Acoustic Signal Analysis

摘要

In this paper, we analyze acoustic characteristics of a sudden drive in a variety of automobiles in recent years to distinguish characteristics of various mechanical noise and ambient noise. Through this acoustical analysis, we analyze the reason for the sudden emergence by understanding the acoustic characteristics of the sudden automobile and understanding the sounds with mechanical characteristics. These studies have shown that they exhibit different characteristics from mechanical sounds that are caused by mistakes by anthropomorphic manipulation. In the future, it will help to understand much more about the identification of sudden emergence by converting the various waveform features to dB. Analysis of the characteristics of the mechanical sound has difficulties with time domain analysis because it has to be distinguished from various noise signals around. In this study, we can analyze these characteristics in the frequency domain and analyze various parameters. Therefore, we focused on analyzing the features on the spectrogram. The characteristics of the anthropomorphic sounds are irregular, while the mechanical sounds of the sudden sounds show a constant steep slope, and the sound pressure of the frequency changes. This feature is a research analysis of this paper because it has a certain characteristic slope because it cannot be artificially created in mechanical operation.