한국어 음성분석을 통한 간이전화 다중전송의 가능성에 관하여 = Toward the Possibility of Simplified Telephone Multiplexing System through Compression of Korean Speech

다국어 초록 (Multilingual Abstract)

Through experimental analysis of the frequency vs intelligibility of korean speech, best combination of narrow bands could be selected, which enables to multiplex two channels of telephone communication with negligible loss in intellibilty.
With a two narrow bands combination, ie. 0.3-0.5/1.2-1.8 KHz for channel 1 and 0.6-1.0/2.0-3.0 KHz for channel 2, total intelligibility of 92% were achieved, which were suffcient for normal telephone conversation in local communication.
The speech compression in time demension is also experimented. With interruption frequency of 15 Hz, more than 80% intelligibility could be obtained in case of korean speech.