Physics Experiment using Arduino Microcontroller: Sound Intensity Level Measurement

Author

Bounseng Bounthong, Soulasay Phiphatphon, Phonepadith Keomanychanh


Abstract

 Experiments need to be properly resourced as they are an essential teaching tool and learning process in physics education. But unfortunately, most faculties and high schools lack technical resources like a laboratory and do not have the appropriate equipment. Specially to filter unwanted sound frequency. Noise is one of the foremost common health hazards. It can cause hearing system disorders, disruption of concentration, stress, interference with auditory communication, and blood pressure increased. In worse case hearing impairment or total hearing loss. Therefore, a measuring system is required to display or monitor noise levels and study the physical properties of sound. The aim of this research is to invent a sound level meter tool monitoring noise levels in decibels. The information acquisition system consists of a Keyes-038 microphone sound sensor module, Arduino Uno microcontroller, display LCD and display LED. The microphone converts the sound intensity to audio voltage. Sound detection using the module is an electret microphone condenser with a sensitivity of -66 dB relative to 1V/µbar. The output from the microphone sound sensor is then connected to the Arduino Uno board. The measurement results are displayed on LCD. The result shows that at 1 kHz frequency produces an instantaneous sound pressure level of 94 dB. Additionally, there are seven LED indicators. So, 7 settings for managing LED display in Arduino. The result of the research will develop an instrument that is capable of detecting and displaying sound amplitude with a measuring range of 44-105 dB.


Keywords

Microphone Sound Sensor, Arduino Uno, Sound Intensity, Sound Level, Sound Level Mete



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References


  • (n.d.). Amazon. Retrieved 04 10, 2022, from https://www.amazon.com/i2c-1602-lcd/s?k=i2c+1602+lcd
  • (n.d.). What is Arduino?Retrieved 04 12, 2022, from Arduino: https://www.arduino.cc/en/Guide/Introduction
  • Geddes, M. (2016). Arduino Project Handbook.San francisco: William Pollock.
  • Joy-IT. (n.d.). KY-038 Microphone sound sensor module. Retrieved 04 10, 2022, from https://datasheetspdf.com/datasheet/KY-038.html
  • Lapono, L. A., & Pingak, R. K. (2018). Design of noise level monitoring based on arduino uno. International conference and exhibition on sciences and technology(pp. 76-84). Labuan Bajo-East Nusa Tenggara Indonesia: UNDANA Press.
  • (n.d.). KY-038 Microphone Sound Detection Sensor Module for Arduino. Retrieved 03 15, 2022, from Majju Research & Engineering: https://www.majju.pk/product/ky-038-microphone-sound-detection-sensor-module-for-arduino/
  • Nurjannah, I., Harijanto, A., & Supriadi, B. (2017). Sound Intensity Measuring Instrument Based on Arduino Board with Data Logger System. International Journal of Advanced Engineering Research and Science, 27-35. doi:10.22161/ijaers.4.9.7
  • Pujol, R. (2018, 06 06). Human auditory range. Retrieved 03 15, 2022, from General audience: http://www.cochlea.org/en/hear/human-auditory-range
  • (n.d.). Microphone sensitivity and conversion. Retrieved 04 18, 2022, from sengpielaudio: http://www.sengpielaudio.com/calculator-transferfactor.htm
  • Young, H. D., & Freedman, R. A. (2020). University Physics with Modern Physics(15 ed.). KAO Two: Pearson Education.

 

 

 

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