3.20 community noise equivalent level. On a given day of the week, twenty-four hour-average A-weighted sound level after addition of 5 decibels to sound levels from 1900 hours to 2200 hours, and after addition of 10 decibels to sound levels from midnight to 0700 hours and from 2200 hours to midnight. Unit, decibel (dB); abbreviation, CNEL; symbol Lden.
« Back to Standards Terminolgy IndexRecent Posts
- Natus Medical Inc. Joins As New ASA Standards Member
- Threshold Acoustics’ Brandon Cudequest to Serve as New Chair of ASA Standards S12 Committee Working Group 18
- Michigan Technological University Joins As New ASA Standards Member
- This Week’s Newly Reaffirmed Standards
- Call for Participation in S12/Working Group 29 for S12.14-1992 (R2020) Revision Project
Recent Comments