Physics Toolbox Sound Meter

This sound meter app measures and displays a graph of Sound Intensity (dB) vs. Time (s) that can be exported in an e-mail or via Google Drive as a .txt attachment with comma separated values (csv). Minimum and maximum sound levels that can be accurately measured are dependent upon the device (usually no more than 80 or 90 dB), and are generally within the range of human voice production of frequencies 300-3,500 Hz and sound intensities 40-60 dB.
Permissions Explained:

android.permission.WRITE_EXTERNAL_STORAGE: A csv file is created and modified on the phone's internal memory.

If you have any questions, comments, or would like to see modifications/updates, please email me at [email protected]