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:

1. A 4 dB
2. B 3 dB
3. C 6 dB
4. D 1 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: AM, FM, SSB, keying, speech processing, and the numbers behind occupied bandwidth.

Drill A-005 — free, no account · All A-005 questions