11.46 speech interference level. One-fourth of the arithmetic sum of the band sound pressure levels for octave bands with nominal midband frequencies of 500, 1000, 2000, and 4000 Hz. Unit, decibel; abbreviation, SIL; symbol, LSi.
« 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