Din En Iso 3382 3 E 2021 02 Pdf [ EXCLUSIVE · PACK ]

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 distance from a speaker where the Speech Transmission Index (STI) falls below 0.50, the point at which concentration starts to improve. Background Noise Level ( Lp,A,Bcap L sub p comma cap A comma cap B end-sub DIN EN ISO 3382 3 E 2021 02 pdf

): The reduction in sound pressure level (dB) when the distance from a speaker is doubled. Speech Level at 4 Meters ( Unlike Part 2, which focuses on temporal decay

Lp,A,S,4mcap L sub p comma cap A comma cap S comma 4 m end-sub Unlike Part 2

(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 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