Instruction: Describe the preprocessing techniques, model architecture, training datasets, and evaluation metrics you would use to improve speech recognition performance.
Context: This question tests the candidate's understanding of the challenges in speech recognition, particularly in adverse conditions, and their ability to apply machine learning to overcome these challenges.
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I would attack the problem at both the data and modeling layers. In noisy speech tasks, better robustness usually starts with training data that reflects the acoustic conditions you expect in production, including background noise, channel variation, accents, and speaking styles.
From there, I would combine data augmentation,...
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