MySoundscape is a STEM project whose purpose is to engage pre-university students as citizen scientists to measure and create sound maps of parks and other natural sites in their communities.
Goals include:
i) to help the students better understand the characteristics of audio signals through the use of digital signal processing tools, and to use these tools for environmental monitoring,
ii) to foster a sensory knowledge of their environment,
iii) to participate in a larger project to sound-map local neighborhoods of geographically diverse locations,
iv) to make MySoundscape maps available to the community so that all can gain an enhanced audio experience their local parks.
The main task of this STEM project is to measure the audio characteristics of local parks. The students use a spectrogram (freely available app on smartphones) to measure audio intensity peak, frequency at this peak, and bandwidth, whether narrow, wide, or fully white.
Then they are asked to suppress all their senses except for hearing, listen to the sounds of the park, and to name the sources of the sounds they hear. The students are asked to compare the sounds against the audio measurements to understand what features distinguish different sources.
Finally, they are asked for their subjective opinions on the audio atmosphere of the park. Do they find it pleasant, calming, loud, etc.? These subjective opinions are compared with the objective measurements to help understand how audio makes us feel.
The students' measurements are transfered to the MySoundscape map, which is publicly available to all at www.mysoundscape.org.
The map above is a soundscape of Madison NJ. Green pins are at park locations. Scrolling over the pin will show the park name. Clicking on the pin gives further information including audio characteristics. The yellow pin is for "iconic" audio sites as chosen by the participants. (The yellow pin here marks the town clock whose bell rings hourly.) The red pins mark "unusual" audio events.
To ensure that the program is sustainable for many years, we have endeavored to use freeware where it serves the needs of our program. For audio measurement, we use Sonic Tools SVM on the iPhone and Spectroid on Android, both freeware apps. For mapping, we use OpenStreetMaps, an open software package. For easy data collection of measurements at park sites, we use an online forms app which is free for low usage. We currently use Google Sites to host mysoundscape.org.
MySoundscape is sponsored by the IEEE North Jersey Section and the IEEE Future Networks Technical Community. With more than 400,000 members in more than 160 countries, IEEE is the world's largest technical professional society. Member areas include aerospace systems, biomedical engineering, computers, consumer electronics, electric power, telecommunications, and many other technical areas.
The following short slide presentation was given at the IEEE Integrated STEM Education Conference (ISEC), Princeton, NJ 9-Mar, 2024.
For more information, please contact, Larry O'Gorman, log@ieee.org.