Sound level meter circuit using LB1409 – ElecCircuit.com
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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.
Sound Level Meter - an overview | ScienceDirect Topics
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Sound-level-meter under VU Meter Circuits -13462- : Next.gr
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Sound level meter circuit using IC LM3914 - Gadgetronicx
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Arduino based Decibel Meter with Sound Sensor & LCD Display - YouTube
