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Table chart sound pressure levels SPL level test …

http://www.sengpielaudio.com/TableOfSoundPressureLevels.htm
Category: Memory Cards  
dB table sound pressure levels SPL level test normal voice sound levels sound units decibel level common sounds sound intensity decibel comparison chart noise ratio Conversion of sound pressure to sound intensity calculation compression rarefaction loudness decibel dB scale ratio factor units - Eberhard Sengpiel sengpielaudio

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