Iso 3382 3 E 2021 02 Pdf | Din En

(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

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 DIN EN ISO 3382 3 E 2021 02 pdf

): The A-weighted sound pressure level of speech at a 4-meter distance, indicating how much nearby surfaces reflect sound. Comfort Distance ( rCr sub cap C (often cited as the 2022 international version) is

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