FIELD: information technology.
SUBSTANCE: device has a source of an analogue speech signal, a single-band oscillator, a first adder with a first envelope detector, a first signal multiplier, a coherent detector, a first frequency halver, a subcarrier frequency generator, a 90° phase changer, an amplitude-limiting amplifier, a differentiator, a first flip-flop with an element for eliminating the constant component of its output oscillation, a second adder, a second envelope detector, a second signal multiplier, a second frequency halver, a two-input coincidence circuit and a second flip-flop with an element for eliminating the constant component of its output oscillation.
EFFECT: doubling of transmission frequency efficiency owing to cutting the frequency band of the speech signal without deterioration of transmission quality.
2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2363091C1 |
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|
RU2439830C1 |
| SINGLE-SIDEBAND SIGNAL CONDITIONER | 0 |
|
SU1644358A1 |
| FORMER OF SINGLE-SIDEBAND SIGNALS | 0 |
|
SU1753578A1 |
| DIVIDER OF THE FREQUENCY BAND OF THE SPEECH SIGNAL IN 2 TIMES | 2018 |
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|
RU2259632C1 |
| SHAPER OF SINGLE-BAND SIGNAL | 0 |
|
SU1506506A1 |
| ONE BAND COMPACTED SIGNALS RECEIVER | 0 |
|
SU1753600A1 |
