IEC 60268-16 Ed.4.0: ′′Sound System Equipment-Part 16: Objective Rating of Speech Intelligibility by Speech Transmission Index,′′ International Electrotechnical Commission, Geneva, Switzerland (2011).
ANSI/ASA S3.5-1997 (R2012), ′′Methods for Calculation of the Speech Intelligibility Index,′′ American National Standard (2012).
ISO 7029:2017, ′′Acoustics Statistical distribution of hearing thresholds related to age and gender,′′ International Organization for Standardization, Geneva, Switzerland (2017).