Process and device for voice interpolation in a transmission sys

Details Process and device for voice interpolation in a transmission sys Process and device for voice interpolation in a transmission sys

1983-12-27

1985-09-10

Bookbinder, Marc E.

Pulse or digital communications

Repeaters

Testing

375 88, 375102, 375104, 455213, 455222, H04B 1204, H04B 110, H04L 2714, H04L 2516

Patent

active

045411018

ABSTRACT:
The interpolation device for the voice coded in DELTA transmission and transmitted on a fixed frequency or with frequency jumps carrier, comprises in parallel on a classic reception network, a jamming detection device being able to be constituted by a high-pass filter in order to detect the components outside the modulated signal band, a detector circuit with threshold fixing the level of the outside band components characterizing a jamming and possibly a monostable circuit. It comprises, furthermore, a rumbling generator that transmits to the input of the DELTA decoder a rumbling sequence in place of the sequence detected on a stage when this sequence is reckoned as jammed by means of a switch controlled by the output of the monostable circuit.

REFERENCES:
patent: 2395737 (1946-02-01), Hansell
patent: 3497812 (1970-02-01), Dixon
patent: 4304004 (1981-12-01), Von der Neyen
patent: 4305042 (1981-12-01), Tanaka et al.
patent: 4355407 (1982-10-01), Mueller
patent: 4426735 (1984-01-01), Kasperkovitz

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