(a)[1]
On Fig. 11.2, underline the most significant bit (MSB) in the sample shown.
(b)[2]
Complete Fig. 11.2 for the next five samples.
(c)[2]
Explain whether the sampling frequency is adequate to allow the detail in the output $V$ to be reproduced.
Physics 9702 · AS & A Level · Characteristics of alternating currents
Characteristics of alternating currents — practice question
The way the output $V$ from a microphone changes with time $t$ is shown in Fig. 11.1. A four-bit analogue-to-digital converter (ADC) processes the output and samples it at intervals of $0.25\,\text{ms}$. The first sample is taken at $t = 0$ and appears in Fig. 11.2.