Use of Mobile Devices with Multifunctional Sound Level Measurement Applications: Some Experiences for Urban Acoustics Education in Primary and Secondary Schools
Open Access
- 9 December 2019
- journal article
- case report
- Published by MDPI AG in Urban Science
- Vol. 3 (4), 111
- https://doi.org/10.3390/urbansci3040111
Abstract
Geo-referenced sound data are often used in the field of acoustics education to learn about the urban acoustic environment. Simple soundwalks and sound collections are also employed, in which acquiring additional information such as visual data, recorded sound data, and GPS location data are helpful to produce a map with sound data and sound collection and to carry out more profound discussions in educational activities. In order to enrich these acoustic educational and environmental survey activities with a simple tool, the use of multifunctional sound-pressure level (SPL) measurement applications with mobile devices are proposed. Some experiences of combined activities of the above methods using the applications and mobile devices are reported in this paper. In this study, applications for SPL measurements, which record GPS location data, sound, photo, and video during measurements, were used to produce geo-referenced sound data. First, the accuracy of the applications was checked and we found them to have reasonable accuracy when used with iOS devices; for example, the averaged error was less than 1.5 dB(A) with iPhone XS. Next, they were actually used in a simple soundwalk-like field survey and the resulting geo-referenced sound data were presented to discuss the merits and demerits of each application. Overall, the applications used in this work were found to be useful; for example, recorded sound allowed us to check the main sound source and to carry out discussions using collected sound samples later, and photos and videos allowed us to grasp the impressions and situations around the measuring points. Therefore, these multifunctional sound level meter (SLM) applications can be effectively used for various purposes, including acoustics education for learning about urban acoustic environments.Keywords
This publication has 18 references indexed in Scilit:
- Mapping Urban Environmental Noise Using SmartphonesSensors, 2016
- A soundscape approach to exploring design strategies for acoustic comfort in modern public libraries: a case study of the Library of BirminghamNoise Mapping, 2016
- Global noise score indicator for classroom evaluation of acoustic performances in LIFE GIOCONDA projectNoise Mapping, 2016
- Testing the accuracy of smartphones and sound level meter applications for measuring environmental noiseApplied Acoustics, 2016
- Application of a smartphone for introductory teaching of sound environment: Validation of the precision of the devices and examples of students' workAcoustical Science and Technology, 2016
- Soundscape approach integrating noise mapping techniques: a case study in Brighton, UKNoise Mapping, 2015
- Evaluation of smartphone sound measurement applicationsThe Journal of the Acoustical Society of America, 2014
- Participatory noise mapping works! An evaluation of participatory sensing as an alternative to standard techniques for environmental monitoringPervasive and Mobile Computing, 2013
- A case study of introductory teaching method for architectural/environmental acoustics using a smartphoneAcoustical Science and Technology, 2013
- NoiseSPY: A Real-Time Mobile Phone Platform for Urban Noise Monitoring and MappingMobile Networks and Applications, 2009