Using orthogonalized voice for simultaneous transmission of voice and data

Author

Goren, M. ; Tirosh, O. ; Kishon-Rabin, L. ; Wulich, D.

Author_Institution

Department of Electrical & Computer Engineering, Ben-Gurion University of the Negev., Beer-Sheva 84105, POB 635, Israel

fYear

1996

fDate

10-13 Sept. 1996

Firstpage

1

Lastpage

5

Abstract

Voiceband channels are frequently used for data transmission, even though they were not designed for such a use. The reason is very simple; such channels already exist. It is also clear that such channels when used for data transmission can not be used at the same time for voice transmission, and vice versa. However, there are a lot of applications where simultaneous transmission of voice and data through the existing voiceband channel is needed. In this work we propose a method for simultaneous transmission based on orthogonalization of the voice signal. A comprehensive assessment of the orthogonal voice which includes subjective measures shows that the orthogonal signal may have full intelligibility while its quality is only slightly degraded. The MOS for orthogonal voice is in the range 2.5–3.9 and depend on the data transmission parameters.

Keywords

Bit error rate; Demodulation; Signal to noise ratio; Speech; Speech processing; Speech recognition; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

European Signal Processing Conference, 1996. EUSIPCO 1996. 8th

Conference_Location

Trieste, Italy

Print_ISBN

978-888-6179-83-6

Type

conf

Filename

7083091