bin "stt" about "Real-time streaming speech-to-text using Vosk" flag "-l --language " help="Language: en, de, fr, es, ru, cn, ja (default: en)" env="VOSK_LANG" flag "-s --size " help="Model size: small, medium, large (default: small)" env="VOSK_SIZE" flag "-w --words" help="Output individual words as they are recognized"