Proceedings of the Acoustical Society of Korea Conference (한국음향학회:학술대회논문집)
- 1994.06a
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- Pages.1070-1075
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- 1994
DESIGN OF DESIRABLE LOUDNESS RATINGS FOR ISDN TELEPHONE
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Hong, Jin-Woo
(Electronics and Telecommunications Research Institute)
;
- Kang, Kyeong-Ok (Electronics and Telecommunications Research Institute) ;
- Kang, Seong-Hoon (Electronics and Telecommunications Research Institute)
- Published : 1994.06.01
Abstract
This paper describes the method for designing loudness ratings as transmission quality for ISDN telephone connected to fully digital network. To design the desirable loudness ratings for ISDN telephone, the model system of digital speech communication for subjective test is developed and opinion tests for establishing the optimal CODEC input level, the range of overall loudness rating, and sidetone masking rating are performed. As the results, the desirable ranges of loudness ratings are proposed as 6 to 8dB for sending, 0 to 2dB for receiving, and 10 to 14dB for sidetone masking rating.
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