Conversion to dB using Tables
dB to Pressure Ratio
PressureRatio1.000.9890.9770.9660.9550.9440.9330.9230.9120.9020.8910.8410.7940.7080.6310.562? db +0.00.10.20.30.40.50.60.70.80.91.01.52.03.04.05.0PressureRatio1.0001.0121.0231.0351.0471.0591.0721.0841.0961.1091.1221.1891.2591.4131.5851.778PressureRatio0.5010.4470.3980.3550.3160.2510.2001.1580.1260.1000.03160.01000.003210-310-410-5? db +67791012141618203040506080100PressureRatio1.9952.2392.5122.8183.1623.9815.0126.3107.94310.00031.62100316.2103104105BA 7666-11, 16
Simple Rules for Conversion
Sound Pressure, p[Pa]2010114
Sound Pressure Level, LpdB re 20 μPa
×100219486848074
40 dB20 dB12 dB6 dB10 dB×10×4×3×20.30.20.1BA 7666-11, 17
Basic Concepts of Sound
Contents:DefinitionsdB ConversionSound FieldsdB ±dB
BA 7666-11, 18
Types of Sound Sources
Point sourceLine sourcer: Lp2r: Lp ? 3 dBPlane sourcer: Lp2r: Lp ? 6 dBr: LpBA 7666-11, 19860510/1
2r: LpAnechoic and Reverberant Enclosures
BA 7666-11, 20860511/1
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