Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-007-005
Adding one bit to the word length, is equivalent to adding ____ dB to the dynamic range of the digitizer:
- A4 dB
- B3 dB
- C6 dB
- D1 dB
Correct answer: C — 6 dB. From the official ISED question bank, verified word for word.
Why
Each extra bit doubles the number of steps a digitizer can use to measure a signal, which doubles the range between the quietest and loudest sounds it can capture. The full explanation — and one for every question — is in Pro.
Practise this section
Transmitters, modulation and processing is section A-005 of the Advanced exam: Transmitters, modulation and processing: AM, FM, SSB, keying, speech processing, and the numbers behind occupied bandwidth.
Drill A-005 — free, no account