sound level detector ppt

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hi, i'm Rattan from Chitkara University,Chandigarh. I need to make a project on sound level detector . shall u snd me a presentation about this project,having a simple circuit diagram,block diagram,its working,applications
etc. so that it can help me in my project based learning(pbl) internal evaluation ,asap. i've searched about it a lot but the only results i'm getting is of sound level meter . so please help me in dis project.

thanku