1. ANSI S3.5, 1997. American National Standard, Methods for the calculation of the speech intelligibility index. Standards Secretariat Acoustical Society of America, New York
2. A model for context effects in speech recognition;Bronkhorst;J. Acoust. Soc. Amer.,1992
3. Frequency importance functions for a feature recognition test material;Duggirala;J. Acoust. Soc. Amer.,1988
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5. IEC International Standard, 1998. Sound system equipment – Part 16. Objective rating of speech intelligibility by speech transmission index. IEC 60268-16, second ed. 1998-03