Solution:

Steps involved in analog to digital conversion,

1) Sampling CT - DT

2) Quantization CA-DA

3) Encoding

$ \mathrm{f}_{\mathrm{s}} \geq 2 \mathrm{f}_{\mathrm{m}}$ samples / sec Critical rate / Nyquist rate: $f_s=2 f_m \\ $

$ \Rightarrow \mathrm{f}_{\mathrm{s}}=2 \times 3.4 \mathrm{k}=6800 \text { samples / sec }\\ $

Practical rate: …