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← TechnologyWhich consequence results when errors accumulate in recursive noise cancellation?
A)Comb filtering emphasizes frequencies✓
B)Quantization noise floor decreases
C)Group delay within passes improves
D)Impulse responses become time-invariant
💡 Explanation
Recursive noise cancellation depends on accurately estimating and subtracting noise; error accumulation causes the estimate to diverge spuriously, creating a comb filtering effect because regular frequency nulls appear. Therefore the signal is distorted, rather than having reduced noise or improved timing.
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