1. Methods for the Calculation of the Speech Intelligibility Index;ANSI S3.5,1997
2. Criteria for Permissible Ambient Noise During Audiometric Testing;ANSI S3.1,1997
3. American National Standard Specification for Audiometers;ANSI S3.6,1996
4. Blue, M., 2002. Speech Intelligibility of the Callsign Acquisition Test in a Quiet Environment. Master's Thesis, North Carolina A&T State University.
5. Using a Multitalker Database to Investigate the Speaker-Related Characteristics of Speech Intelligibility;Cerrato,1995