14:58 Nov 24, 2009 |
English to Norwegian translations [PRO] Tech/Engineering - Telecom(munications) Additional field(s): Electronics / Elect Eng | ||||
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Summary of translations provided | ||||
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4 | aliasing |
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aliasing Definition from snl: aliasing – telekommunikasjon, det at et tidskontinuerlig signal samples med for lav samplingsrate (se sampling) slik at signalet ikke entydig kan føres tilbake til sin tidskontinuerlige form. Årsaken er at forskjellige frekvenskomponenter kan gi samme samplede signal. Aliasing unngås ved at samplingraten er minst dobbelt så høy som frekvensen for den høyeste spektralkomponenten i signalet. I standard PCM-systemer for telefoni begrenses talesignalet oppad til 3400 Hz, og det samples 8000 ganger per sekund. Example sentence(s):
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