Discussion
A \( 10 \)-bit coder is used. Its signal-to-quantisation-noise ratio is about
Answer: C
Applying the standard result for a full-scale sinusoid:
\[ \begin{aligned} \mathrm{SNR} &= 6.02n + 1.76 \\ &= 60.2 + 1.76 \approx 62 \ \mathrm{dB} \end{aligned} \]
so about 62 dB. Sixty decibels drops the constant term, which is the usual approximation and close enough for most purposes. 48 dB corresponds to eight bits and 30 dB to five. The six-decibels-per-bit slope is the part worth remembering; the additive constant is a refinement. The parameter that varies and the parameter that does not are worth naming before any substitution is attempted.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development