ITPEC IP October 2019 Question 2
ITPEC IP October 2019 — Question 2 of 100
Using 16 bits instead of 8 bits per sample records amplitude more finely. Eight-bit encoding provides 256 quantization levels, whereas 16-bit encoding provides 65,536 levels, reducing quantization error and increasing dynamic resolution.
Answer (a)
Why not others:
- twice as many bits per sample increases, rather than decreases, the uncompressed data size
- processing load does not inherently decrease with larger samples
- the highest recordable frequency depends on sampling frequency, which is unchanged
Key rule: Bit depth controls amplitude resolution; sampling frequency controls time resolution and the upper reproducible frequency.
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