Ivan Kostoski

Sadly the datasheet for the mentioned microphone shows frequency response only for 100Hz-10KHz range. You can try to guess the response for lower frequencies and plug the data into ics-43434.m...

Hi keeshanam, in normal urban environment noise will rarely go below ~40dB (library noise level), or ~35dB at quiet night, so that would be expected result. For less than that...

Hi @MU-STAGE, you can certainly try to port the code to STM32. You will likely need need STM32 that has FPU (i.e M4) and support for i.e. CMSIS DSP library...

Hi @KianYeo, you can't add-and-average `Leq` values, you would need to integrate them (see: http://www.gracey.co.uk/basics/leq-b1.htm). However, even with large `LED_PERIOD` values, it is unlikely to overload double-precision floating-point `Leq_sum_sqr` (max...