PAST jointly optimizes an EnCodec-style codec with CTC and phoneme classification losses to produce hybrid phonetic-acoustic speech tokens that outperform SpeechTokenizer and X-Codec.
These models usually operate over acoustic tokens or phonetic speech tokens (also known as semantic tokens)
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PAST: Phonetic-Acoustic Speech Tokenizer
PAST jointly optimizes an EnCodec-style codec with CTC and phoneme classification losses to produce hybrid phonetic-acoustic speech tokens that outperform SpeechTokenizer and X-Codec.