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Q34
(CDS-I/2026)
Science & Technology › ICT, AI, Cybersecurity & Emerging Tech
In MP3 compression scheme, 60 minutes of music can be stored in about :
Result
Your answer:
—
·
Correct:
C
Explanation
MP3 (MPEG-1 Audio Layer III) is a lossy digital audio compression format. It reduces the size of an audio file by removing components of the sound that are beyond the range of human hearing or are masked by other sounds.
- Uncompressed Audio: Standard CD-quality audio (WAV) requires about 10 MB per minute, meaning 60 minutes would occupy roughly 600 MB (Option A).
- Compression Ratio: MP3 typically compresses audio by a factor of 10 to 12. At a common bitrate of 128 kbps, the storage requirement is approximately 1 MB per minute.
- Calculation: For 60 minutes at 112-128 kbps, the size ranges between 50 MB and 60 MB. Specifically, at 112 kbps, 60 minutes takes about 50.4 MB.
Thus, 50 MB is the most accurate estimate. Option D (10 MB) is too small, and Option B (200 MB) implies a very high, less common bitrate for standard compression.
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