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Decibel Meter Sound Detector by Ashraf Thoppukadavil
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Decibel Meter Sound Detector by Ashraf Thoppukadavil
Frequency Meter PRO on the App Store
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SPL Meter - Apps on Google Play
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SpectrumView | Oxford Wave Research
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Climate change research in partnership with Thoreau: Monitoring noise pollution in cities and protected areas with smartphones
Decibel Meter Sound Detector on the App Store
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