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← Language & CommunicationWhy does repetition improve speech recognition accuracy within a noisy communication channel?
A)Increases channel's spectral bandwidth
B)Averages out random noise effects✓
C)Enhances signal's fundamental frequency
D)Creates stronger carrier wave modulation
💡 Explanation
Redundancy improves accuracy because repeating the signal allows the receiver to use temporal averaging, effectively filtering out random noise. Therefore, averaging noise components increases signal fidelity, rather than altering bandwidth or signal frequency, which are independent signal properties.
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