Din En Iso 3382 3 E 2021 02 Pdf Access

): The reduction in sound pressure level (dB) when the distance from a speaker is doubled. Speech Level at 4 Meters (

(often cited as the 2022 international version) is the primary standard for measuring room acoustic parameters in unoccupied open-plan offices . Unlike Part 2, which focuses on temporal decay (reverberation), Part 3 focuses on spatial decay , or how sound levels drop as you move away from a speaker. Key Acoustic Parameters DIN EN ISO 3382 3 E 2021 02 pdf

The standard defines several single-number quantities to evaluate acoustic performance: Spatial Decay Rate of Speech ( D2,Scap D sub 2 comma cap S end-sub ): The reduction in sound pressure level (dB)