DVDdoug:
That would depend on the quality of your analog electronics....I'm pretty sure the hospital rooms I've been are louder than 30dB SPL.
Thank you for your help! I checked on a real SPL and the sound level is around 35dB.
All I need to do is connect the Electret Microphone (SparkFun Electret Microphone Breakout - BOB-12758 - SparkFun Electronics) on my Arduino and do the programming, since it comes with a amplifier, right ? Do I need anything more ?
Regards,
Gabriel