Arduino based Decibel meter with Sound Sensor | IoT Projects Ideas
Sound Decibel Meter Circuit
Electronics Technology: Decibel Sound Pressure Level Meter Circuit This is a design for decibel meter circuit. This circuit is used to measure sound pressure level (SPL) from about 60 to 70 dB.
Everything You Wanted To Know About Sound Level Meters (SLMs) - ProSoundWeb
Peak-Reading Meters
Make Your Own SPL DB Meter With A Microphone And MCU | Hackaday