Extra exam question E8A06
Subelement E8, SIGNALS AND EMISSIONS· Group E8A
What is the approximate ratio of PEP-to-average power in an unprocessed single-sideband phone signal?
- A.2.5 to 1 (correct answer)
- B.25 to 1
- C.1 to 1
- D.13 to 1
WhyThe approximate ratio of PEP to average power in an unprocessed single-sideband phone signal is 2.5 to 1. An unprocessed single-sideband phone signal typically has a PEP-to-average power ratio of about 2.5 to 1, reflecting how much speech's natural amplitude peaks exceed its average level, answer A. The much larger 25-to-1 and 13-to-1 ratios overstate this typical peak-to-average relationship, and 1-to-1 would describe a signal with no amplitude variation at all, not normal speech.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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