Telephone apparatus

Details Telephone apparatus Telephone apparatus

2007-06-05

2007-06-05

Chawan, Vijay (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S214000, C704S215000, C381S104000, C381S123000, C381S057000

Reexamination Certificate

active

10325959

ABSTRACT:
The telephone apparatus of the present invention comprises a first voice band expander for generating a voiced signal frequency component by shifting the frequency of the voice signal received, a second voice band expander for generating a voiceless signal frequency component by shifting the frequency of the voice signal received, and a voice composer for composing the voice signal received, the output of the first voice band expander, and the output of the second voice band expander, which is able to output clear voices in aural communication.

REFERENCES:
patent: 5630012 (1997-05-01), Nishiguchi et al.
patent: 6285979 (2001-09-01), Ginzburg et al.
patent: 6496797 (2002-12-01), Redkov et al.
patent: 6636609 (2003-10-01), Ha et al.
patent: 2002-82685 (2002-03-01), None
“Alan V. Oppenheim, Alan S. Willsky, Ian T. Young, “Signals and Systems”, Prentice hall, 1983, p. 449-455”.

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