Apparatus and method for transparent tone passing over narrowban

Details Apparatus and method for transparent tone passing over narrowban Apparatus and method for transparent tone passing over narrowban

1992-01-17

1994-09-13

Knepper, David D.

395 216, 395 235, G10L 700, G10L 706

Patent

active

053476115

ABSTRACT:
A method of passing tones transparently over narrowband channels without having to detect the tones at the transmit side is described. This method requires neither separate handling of tones for the transmission purpose, nor prior knowledge of the characteristics of the signaling tones used. It is a relatively general method that can be applied to systems using a variety of speech coding techniques utilizing a frame structure.

REFERENCES:
patent: 4027102 (1977-05-01), Ando et al.
patent: 4296277 (1981-10-01), Daneffel
patent: 4303803 (1981-12-01), Yatsuzuka
patent: 4694482 (1987-09-01), Reesor et al.
"IEEE Dictionary of Electrical and Electronics Terms," Frank Jay, editor, 1984, IEEE, Inc., p. 280.

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