Consumer Electronics

Multiple Choice Questions

1. The problem of signal-to-noise ratio is simply solved by using,
   1. wider sections of tape
   2. narrower sections of tape
2. White noise contains frequencies spread
   1. all over the audio range
   2. over a restricted portion of the audio range
3. Noise in lower frequency range is
   1. particularly offensive to the human ear
   2. not particularly offensive to the human ear
4. The net effect of pre-emphasis is to
   1. increase the signal-to-noise ratio at the higher audio frequencies
   2. decrease the signal-to-noise ratio at the higher audio frequencies
5. Dynamic range in tape recording is limited by
   1. tape hiss
   2. tape saturation
   3. (a) and (b)
   4. (d) neither (a) nor (b)
6. Dolby A system operates on
   1. the entire frequency spectrum
   2. just the highs