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    • English
      • Telecom(munications)
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          • Term
            • compander
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          • Definition(s)
            • Signal processing technique which uses both compression and expansion to improve dynamic range and signal-to-noise ratio. A signal is passed through a non-linear transformation prior to transmission. A reverse of this transformation occurs at reception. The transformation is such that quiet portions are boosted and loud portions reduced. Noise is reduced because the quiet signals are louder, compared to the noise in the transmission channel. Used in digital, PCM, transmissions as well as analog applications. Dolby is a common example of a compander-based noise reduction system. Maxim Integrated Products, Dallas Semic.
          • Example sentence(s)
            • This compander covers a frequency domain from 20Hz to 20KHz, the total distortions are below 1% and the signal/noise ratio is 80dB. - electroschematics.com by
            • Unlike traditional companders that have increasing amounts of signal distortion as the frequency becomes lower, the Syfx compander has no signal distortion at any frequency. - syfx by
            • We tested transmissions with two companders (DSKs) on 40 meter SSB using three ham radios to compare co-channel interference and signal quality. The third radio was used for creating an interference signal. The compander definitely helped to lessen the co-channel interference from this interfering signal transmitting at the same signal strength. - people.wallawalla.edu by
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    • Bulgarian
      • Telecom(munications)
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          • Term
            • компандер
          • Additional fields of expertise
          • Definition(s)
            • Устройство за обработка на сигнали, което използва едновременно компресиране и експандиране с цел подобряване на динамичния обхват и съотношението сигнал/шум. При предаването, сигналът преминава през нелинейна обработка, а при приемането се извършва обратната обработка. В резултат тихите части се усилват, а силните се намаляват. Намалението на шума идва от това, че слабите части от сигнала са по-силни в сравнение с шума в предавателния канал. Компандерите се използват в цифрови и аналогови приложения, при ШИМ и предавания. Maxim Integrated Products, Dallas Semic. - by eboevski
          • Example sentence(s)
            • Този компандер работи в честотния обхват от 20 Hz до 20 KHz и се характеризира със сумарни изкривявания под 1% и съотношение сигнал/шум 80dB. - electroschematics.com by eboevski
            • За разлика от традиционните компандери, при които изкривяванията в сигнала се увеличават с намаляване на честотата, компандерът на Syfx не внася изкривявания при каквато и да било честота. - syfx by eboevski
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