幽冥大陆(五十七)ASR whisper-cli命令行使用 C语言—东方仙盟筑基期

whisper-cli 实际通常指 whisper.cpp 提供的命令行工具(main 可执行文件),以下是 Windows 环境下的核心使用说明,适配轻量级、CPU 优先的本地化语音识别需求:

一、 基础命令格式

bash

运行

复制代码
./main -m models/ggml-base.en.bin -f audio.wav

核心参数说明:

  • -m <model-path>:指定模型文件路径(必须项,需提前下载对应量化模型,如 ggml-base.en.bin
  • -f <audio-path>:指定待识别的音频文件路径(支持 WAV/MP3 等,推荐 16kHz 单声道 WAV)

二、 关键优化参数(适配 CPU 优先 + 实时需求)

  1. 量化与低资源配置

    bash

    运行

    复制代码
    ./main -m models/ggml-tiny.en.bin -f audio.wav -c 0 --threads 4
    • -c <ctx-size>:设置上下文窗口大小,-c 0 自动适配,降低内存占用
    • --threads <num>:指定 CPU 线程数(建议设为 CPU 核心数的一半,平衡速度与资源消耗)
    • 模型选择:优先选 tiny/base 级别的英文模型(ggml-tiny.en.bin),体积小、识别快,适合垂直领域指令
  2. 实时语音识别(麦克风输入)

    bash

    运行

    复制代码
    ./main -m models/ggml-base.en.bin --mic 1 --step 500 --length 5000
    • --mic <device-id>:指定麦克风设备 ID(Windows 下可通过 ./main --list-mics 查看设备列表)
    • --step <ms>:实时识别的步长(单位毫秒,越小越实时,建议 500)
    • --length <ms>:每次识别的音频长度(建议 5000,即 5 秒)
  3. 垂直领域优化(商业服务指令)

    bash

    运行

    复制代码
    ./main -m models/ggml-base.en.bin -f audio.wav -k 10 --prompt "收款 配镜 验光 取镜"
    • --prompt <text>:添加领域关键词提示,引导模型优先识别商业服务相关指令
    • -k <max-words>:限制输出最大词数,适配短语音指令场景

三、 输出与格式控制

  • -otxt:将识别结果保存为 TXT 文件

  • -ojson:输出 JSON 格式结果(便于程序调用)

    bash

    运行

    复制代码
    ./main -m models/ggml-base.en.bin -f audio.wav -ojson

命令行全说明

复制代码
usage: D:\ai\asr\whisper64\whisper-cli.exe [options] file0 file1 ...
supported audio formats: flac, mp3, ogg, wav

options:
  -h,        --help                 [default] show this help message and exit
  -t N,      --threads N            [4      ] number of threads to use during computation
  -p N,      --processors N         [1      ] number of processors to use during computation
  -ot N,     --offset-t N           [0      ] time offset in milliseconds
  -on N,     --offset-n N           [0      ] segment index offset
  -d  N,     --duration N           [0      ] duration of audio to process in milliseconds
  -mc N,     --max-context N        [-1     ] maximum number of text context tokens to store
  -ml N,     --max-len N            [0      ] maximum segment length in characters
  -sow,      --split-on-word        [false  ] split on word rather than on token
  -bo N,     --best-of N            [5      ] number of best candidates to keep
  -bs N,     --beam-size N          [5      ] beam size for beam search
  -ac N,     --audio-ctx N          [0      ] audio context size (0 - all)
  -wt N,     --word-thold N         [0.01   ] word timestamp probability threshold
  -et N,     --entropy-thold N      [2.40   ] entropy threshold for decoder fail
  -lpt N,    --logprob-thold N      [-1.00  ] log probability threshold for decoder fail
  -nth N,    --no-speech-thold N    [0.60   ] no speech threshold
  -tp,       --temperature N        [0.00   ] The sampling temperature, between 0 and 1
  -tpi,      --temperature-inc N    [0.20   ] The increment of temperature, between 0 and 1
  -debug,    --debug-mode           [false  ] enable debug mode (eg. dump log_mel)
  -tr,       --translate            [false  ] translate from source language to english
  -di,       --diarize              [false  ] stereo audio diarization
  -tdrz,     --tinydiarize          [false  ] enable tinydiarize (requires a tdrz model)
  -nf,       --no-fallback          [false  ] do not use temperature fallback while decoding
  -otxt,     --output-txt           [false  ] output result in a text file
  -ovtt,     --output-vtt           [false  ] output result in a vtt file
  -osrt,     --output-srt           [false  ] output result in a srt file
  -olrc,     --output-lrc           [false  ] output result in a lrc file
  -owts,     --output-words         [false  ] output script for generating karaoke video
  -fp,       --font-path            [/System/Library/Fonts/Supplemental/Courier New Bold.ttf] path to a monospace font for karaoke video
  -ocsv,     --output-csv           [false  ] output result in a CSV file
  -oj,       --output-json          [false  ] output result in a JSON file
  -ojf,      --output-json-full     [false  ] include more information in the JSON file
  -of FNAME, --output-file FNAME    [       ] output file path (without file extension)
  -np,       --no-prints            [false  ] do not print anything other than the results
  -ps,       --print-special        [false  ] print special tokens
  -pc,       --print-colors         [false  ] print colors
             --print-confidence     [false  ] print confidence
  -pp,       --print-progress       [false  ] print progress
  -nt,       --no-timestamps        [false  ] do not print timestamps
  -l LANG,   --language LANG        [en     ] spoken language ('auto' for auto-detect)
  -dl,       --detect-language      [false  ] exit after automatically detecting language
             --prompt PROMPT        [       ] initial prompt (max n_text_ctx/2 tokens)
             --carry-initial-prompt [false  ] always prepend initial prompt
  -m FNAME,  --model FNAME          [models/ggml-base.en.bin] model path
  -f FNAME,  --file FNAME           [       ] input audio file path
  -oved D,   --ov-e-device DNAME    [CPU    ] the OpenVINO device used for encode inference
  -dtw MODEL --dtw MODEL            [       ] compute token-level timestamps
  -ls,       --log-score            [false  ] log best decoder scores of tokens
  -ng,       --no-gpu               [false  ] disable GPU
  -fa,       --flash-attn           [true   ] enable flash attention
  -nfa,      --no-flash-attn        [false  ] disable flash attention
  -sns,      --suppress-nst         [false  ] suppress non-speech tokens
  --suppress-regex REGEX            [       ] regular expression matching tokens to suppress
  --grammar GRAMMAR                 [       ] GBNF grammar to guide decoding
  --grammar-rule RULE               [       ] top-level GBNF grammar rule name
  --grammar-penalty N               [100.0  ] scales down logits of nongrammar tokens

Voice Activity Detection (VAD) options:
             --vad                           [false  ] enable Voice Activity Detection (VAD)
  -vm FNAME, --vad-model FNAME               [       ] VAD model path
  -vt N,     --vad-threshold N               [0.50   ] VAD threshold for speech recognition
  -vspd N,   --vad-min-speech-duration-ms  N [250    ] VAD min speech duration (0.0-1.0)
  -vsd N,    --vad-min-silence-duration-ms N [100    ] VAD min silence duration (to split segments)
  -vmsd N,   --vad-max-speech-duration-s   N [FLT_MAX] VAD max speech duration (auto-split longer)
  -vp N,     --vad-speech-pad-ms           N [30     ] VAD speech padding (extend segments)
  -vo N,     --vad-samples-overlap         N [0.10   ] VAD samples overlap (seconds between segments)

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