Classical codecs are more noise-robust than neural ones for sentence intelligibility; speech enhancement before coding recovers most of the loss, and ASR metrics correlate highly with averaged subjective scores.
Low-resource audio codec (LRAC): 2025 chal- lenge description
2 Pith papers cite this work. Polarity classification is still indexing.
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2026 2representative citing papers
ClariCodec applies GRPO reinforcement learning to a 300 bps neural speech codec, using ASR word-error rate as reward to cut LibriSpeech test-clean WER from 4.64% to 3.55%.
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Assessing the Impact of Noise and Speech Enhancement on the Intelligibility of Speech Codecs
Classical codecs are more noise-robust than neural ones for sentence intelligibility; speech enhancement before coding recovers most of the loss, and ASR metrics correlate highly with averaged subjective scores.