(a)[3]
In present-day communications systems, most data is sent in digital rather than analogue form. Suggest three advantages of transmitting data in digital form.
(b(i)(1))[1]
Suggest what happens to the quality of the recording when sampling is carried out at a higher frequency instead of a lower one.
(b(i)(2))[1]
Suggest the effect on the quality of the recording of using a long word length rather than a shorter word length.
(b(ii))[2]
The recording has a total duration of 5 minutes 40 seconds. Calculate the number of bits produced during the recording.
(b(i)1)[1]
Suggest the effect on the quality of the recording of sampling at a high frequency rather than a lower frequency.
(b(i)2)[1]
Suggest the effect on the quality of the recording of using a long word length rather than a shorter word length.