earticle

영어

The interlayer noise in apartment buildings is becoming a social problem, and the number of disputes related to it are increasing every year. Measuring and locating the noise sources using sound level meters is critical for the resolution of this problem. However, sound level meters are expensive, delicate, bulky, making them difficult to use. Smartphones are powerful minicomputers equipped with various sensors like microphones, accelerometers, gyroscopes, GPS, etc. They are a universal device used by the majority of the population. Many studies have proven the accuracy of smartphone noise measurement applications and their potential as environmental monitoring tools. But studies on the potential for the use of smartphones to resolve the issue of interlayer noise in apartment buildings are lacking. Therefore, this study proposes a system to monitor the interlayer noise that will measure the sound and estimate the location of the noise using the sensors and applications in smartphones. To evaluate how this system can be used effectively within an apartment building, a case study has been performed to verify its validity. The result shows that the Mean Absolute Error (MAE) between the actual noise generating position and the estimated noise source location was measured at 1.7 m, with a minimum error of 0.4 m and a maximum error of 3.2 m. This means that smartphones, in the future, can be used as low-cost monitoring and evaluation devices to measure the interlayer noise in apartment buildings