ASR Decoder
Project description
asr-decoder
CTC decoder with hotwords for ASR models. Supports ctc_greedy_search and ctc_prefix_bream_search decoding methods.
Usage
- ctc greedy search
from asr_decoder import CTCDecoder
decoder = CTCDecoder()
# ctc_probs: (sequence_length, vocab_size)
result = decoder.ctc_greedy_search(ctc_probs, is_last=True)
- ctc prefix beam search (with hotwords)
from asr_decoder import CTCDecoder
hotwords = ["停止"]
decoder = CTCDecoder(hotwords, symbol_table, bpemodel)
# ctc_probs: (sequence_length, vocab_size)
result = decoder.ctc_prefix_beam_search(ctc_probs, beam_size=3, is_last=True)
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