Hi

I have used the following sensors in the past:
High-performance Sound Sensor Decibel Meter Sound Level Meter Sound Module | eBay

It works well.

Is it possible to use analogue Mems microphone with ADC monitoring the output to determine the audio levels in terms of db levels?

 

You and the specs of the sensor do not say if the sound is a momentary gun blast or a continuous car horn.
Also the frequency response?
Any microphone produces an analogue audio output. It needs a preamp and a circuit to convert its linear levels to logarithmic dBs.

The audio level monitor I built senses all audio frequencies and has a very fast "peak detector" circuit.

 

I am using this to measure ambient audible noise, purely for comparison purposes between different times. It does not need to be a lab or regulatory standard. For example, placing it in an in-office corridor to detect peak time people are at the tea/coffee point, or roadside traffic, etc.

 

Hi

I have used the following sensors in the past:
High-performance Sound Sensor Decibel Meter Sound Level Meter Sound Module | eBay

It works well.

Is it possible to use analogue Mems microphone with ADC monitoring the output to determine the audio levels in terms of db levels?

Yes. You can also get MEMS microphones with the ADC built in. All you need is an I2S interface.

 

Yes. You can also get MEMS microphones with the ADC built-in. All you need is an I2S interface.

Yes, some devices or other microcontrollers have an i2S interface, so I can simply look at the raw audio data to determine the noise level. I will check if there is an audio device which could do what I require natively.

I think i can place a ESP32 module, which could do this.