# asr-decoder

**Repository Path**: gcyai/asr-decoder

## Basic Information

- **Project Name**: asr-decoder
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2025-11-18
- **Last Updated**: 2025-11-18

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# asr-decoder

CTC decoder with hotwords for ASR models. Supports `ctc_greedy_search` and `ctc_prefix_bream_search` decoding methods.

## Usage

- ctc greedy search

``` python
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)

``` python
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)
```