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← Language & CommunicationWhy does speech recognition accuracy decline when input audio contains a poem recited with unnatural meter?
A)Acoustic impedance mismatches obscure phonemes
B)Lexical access relies on semantic overlap
C)Prosodic expectations guide pattern matching✓
D)Source-channel coding degrades spectral resolution
💡 Explanation
Speech recognition systems rely on matching acoustic signals to expected phoneme sequences, and these expectations are influenced by typical prosodic patterns. Because unnatural meter violates these prosodic expectations, it disrupts the system's ability to correctly parse the speech signal; therefore, accuracy declines, rather than due to acoustic properties or lexical access strategies.
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