Measurement

Sound level meter

• measures acoustics, generally a hand-held instrument with just a microphone...
• generally condenser microphone for stability/reliability
• diaphram responds to change in air pressure (pascals) caused by sound waves and is converted to a voltage reading

Decibels (dB) is usually logarithmic represntation of sound pressure with 0 dB SPL equal to 20 micropascals.

However, the reading from a sound level meter does not correlate well to human-perceived loudness, which is better measured by a loudness meter.

Software

iphone app

• https://www.cdc.gov/niosh/noise/about/app.html

computer

• https://www.audacityteam.org/
• https://www.roomeqwizard.com/

Hardware

- https://www.amazon.com/Tadeto-Portable-Backlight-Weighted-Factories/dp/B09G6HLNVV

Citations

• https://en.wikipedia.org/wiki/Sound_level_meter
• https://www.amazon.com/Tadeto-Portable-Backlight-Weighted-Factories/dp/B09G6HLNVV