Tags: #audio # Sound Pressure Level (dB) Sound Pressure Level is a measurement of, to put it simply, how loud something is. Normally pressure is measured in Pascals (Pa), but when talking about sound, Decibels (dB) is the preferred unit. Decibels (dB) use a logarithmic scale, which means for every 10 dB increase in volume, it is twice as loud. Sources: - [Table chart sound pressure levels SPL level test normal voice sound levels pressure sound intensity ratio decibel comparison chart conversion of sound pressure to sound intensity noise sound units decibel level comparison of common sounds calculation compression rarefaction loudness decibel dB scale ratio factor unit examples - sengpielaudio Sengpiel Berlin](http://www.sengpielaudio.com/TableOfSoundPressureLevels.htm) - [Understanding Sound Pressure Level (SPL) and the Decibel Scale - PTR](https://www.protoolreviews.com/understanding-sound-pressure-level-spl-decibel-scale-db/)