Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-007-009
What is the undesirable result of AF clipping in a speech processor?
- A Increased harmonic distortion
- B Reduced average power
- C Increased average power
- D Reduction in peak amplitude
Correct answer: A — Increased harmonic distortion. From the official ISED question bank, verified word for word.
Why
When a speech processor clips the audio signal, it chops off the tops and bottoms of the sound waves, turning smooth curves into flat, square-like shapes. 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.