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Home Compare [close] - Slovak
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- Zároveň kompander ovplyvňuje aj maximálnu úroveň signálu, t.j. u nás na vstupe a výstupe +20 ... Činnosť kompandera pri prenose signálu cez prenosový kanál, ... Obvody na úpravu amplitúdy signálu - by Jan Kolesar
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- Princíp systému je založený na princípe, že kompandér zlepší odstup iba voči šumu vznikajúcemu pri reprodukcii zaznamenaného signálu - Magnetický záznam zvuku by Jan Kolesar
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Compare [close] - English
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- 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.
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- 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
Compare [close] - Hungarian
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- Kettős kompander áramkör, mely a páratlan hangminőség érdekében külön kezeli a mély és a magas frekvenciákat. - Mr. Kool Kft. by Attila Széphegyi
- „Az emberi hallás fokozottan érzékeny a kis amplitúdójú jelekre, a nagy amplitúdójú jelekre pedig kevésbé.
Ezért, valamint a jel/zaj viszony miatt nemlineáris kódolást célszerű alkalmazni, de a rendelkezésre álló kódolók
azonban általában csak lineáris kódolásra képesek. A megoldást az jelenti, hogy a kódolni kívánt jelet először
egy speciális karakterisztikájú szűrőn (a kompresszoron) engedjük át, majd a jelet lineárisan kódoljuk, végül
pedig a túloldalon ugyanennek a szűrőnek az inverzével (az expanderrel) visszaállítjuk az eredeti jelet. Ezt
nevezzük kompanderes kvantálásnak. Európában az A-törvényű, Amerikában a -törvényű kompander
karakterisztika használatos.”
Távközlő hálózatok (egyetemi órai jegyzet) BME, Műszaki Informatika szak, 2003.
- Távközlő hálózatok (TH jegyzet) by Attila Széphegyi
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Compare [close] - Portuguese
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- Equipamento de áudio analógico empregado na redução do ruído em gravações e que opera através da compressão da banda dinâmica do sinal. Alguns exemplos são: Dolby C, dBx, CX, etc.
glossário on line - by Ioná (X)
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- O sistema de áudio "Compander" comprime a voz durante a transmissão e expande durante a recepção, permitindo um áudio mais alto e claro
- sempre telecom by Ioná (X)
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Compare [close] - Persian (Farsi)
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- این یک تکنیک در پردازش سیگنال می باشد که هم از فشرده سازی وهم از نافشرده سازی برای بهبود دینامیک محدوده دینامیکی و نسبت سیگنال به نویز بهره می گیرد. به عبارت دیگر این سيستمی است كه سيگنال را در فرستنده فشرده و در گيرنده باز میكند. Open learning Center - by Soheil Arzanpour
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Compare [close] - Croatian
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- "Kompander (kompresor+ekspander) je uniformni kvantizator koji na ulazu ima nelinearno preslikavanje f a na izlazu preslikavanje g."
Izvor: Zavod za elektroničke sustave i obradbu informacija Sveučilišta u Zagrebu Laboratorij za sustave i signale - by Kristina Kolic
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