| 摘要 |
FIELD: electric communications. SUBSTANCE: transmitting part of device has input filter, comparison circuit, n-bit shift register, n-bit digital detector, syllable filter, amplitude-pulse modulator, integrator, clock, receiving part of device has n-bit shift register, n-bit digital detector, syllable filter, amplitude-pulse modulator, integrator, output filter and clock. In addition device has analyzer for checking validity of information to be transmitted. Transmitting part of analyzer has commutator, pulse generator, synchronization signal generator, control unit, receiving part of device has commutator, comparison circuit, error counter, digital-to-analog converter, detector of synchronization signals and comparison circuit. In addition device has controlled amplifier. Device may be used for telephone systems which operate under conditions of high level of acoustic noise in communication channel. EFFECT: increased stability to noise. |
