Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-007-006
What do you call the circuit which employs an analog to digital converter, a mathematical transform, a digital to analog converter and a low pass filter?
- ADigital formatter
- BMathematical transformer
- CDigital transformer
- DDigital signal processor
Correct answer: D — Digital signal processor. From the official ISED question bank, verified word for word.
Why
A Digital signal processor is the correct term because it describes a system that converts real-world analog signals into digital numbers, applies mathematical changes to those numbers, and then converts them back to analog form for further use. 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.
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